The sodium isotopes N 11 23 a has one more electron than N 11 24 a has to be indicated as true or false. Concept Introduction: Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral. An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses. In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

Question

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Answer 1

Question

Chapter 3, Problem 3.37EP

(a)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one more electron than N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(b)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same number of neutrons as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(c)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one subatomic particle less than that of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(d)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same atomic number as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

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Answer 2

Question

Chapter 3, Problem 3.37EP

(a)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one more electron than N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(b)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same number of neutrons as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(c)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one subatomic particle less than that of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(d)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same atomic number as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

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Answer 3

Question

Chapter 3, Problem 3.37EP

(a)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one more electron than N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(b)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same number of neutrons as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(c)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one subatomic particle less than that of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(d)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same atomic number as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

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Answer 4

Question

Chapter 3, Problem 3.37EP

(a)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one more electron than N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(b)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same number of neutrons as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(c)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one subatomic particle less than that of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(d)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same atomic number as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

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Answer 5

Chapter 3, Problem 3.37EP

(a)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one more electron than N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(b)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same number of neutrons as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(c)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one subatomic particle less than that of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

(d)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same atomic number as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

Answer 6

Chapter 3, Problem 3.37EP

(a)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one more electron than N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

Answer 7

Chapter 3, Problem 3.37EP

(a)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one more electron than N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same number of neutrons as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same number of neutrons as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

Answer 10

(c)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one subatomic particle less than that of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

Answer 11

(c)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has one subatomic particle less than that of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

Answer 12

(d)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same atomic number as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

Answer 13

(d)

Interpretation Introduction

Interpretation:

The sodium isotopes N1123a has same atomic number as of N1124a has to be indicated as true or false.

Concept Introduction:

Atoms are made up of even smaller particles. These particles are very small and these are all the building blocks of atoms and they are known as subatomic particles. Protons, electrons, and neutrons are the subatomic particles that are found in atom. Electrons possess a negative electrical charge. Protons possess a positive electrical charge. Neutrons possess no charge and they are neutral.

An atom is said to be neutral as the number of protons and electrons are same. The presence of more number of neutrons also does not affect the charge neutrality. If the atoms of same element differ in the number of neutrons then they are known as isotopes. Isotopes have same number of protons and electrons but they differ in the number of neutrons present in them. As the numbers of electrons are same, their chemical properties are same. Their physical properties are different as they have different masses.

In other words it can be said that isotopes of the same element have same atomic number but differ in their mass numbers.

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Ch. 3.1 - Which of the following statements concerning the...Ch. 3.1 - Prob. 2QQ Ch. 3.1 - How many electrons are required to equal the mass...Ch. 3.1 - Which of the following statements concerning an...Ch. 3.1 - Prob. 5QQ Ch. 3.2 - The atomic number for an atom containing 10...Ch. 3.2 - Prob. 2QQ Ch. 3.2 - How many electrons are present in an atom of...Ch. 3.2 - The identity of an atom is determined by the...Ch. 3.2 - Which of the following statements is correct for...

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