Visit this website (http://openstaxcollege.org/l/ptable) to view the periodic table. In the periodic table of the elements, elements in a single column have the same number of electrons that can participate in a chemical reaction . These electrons are known as “valence electrons.” For example, the elements in the first column all have a single valence electron—an electron that can be “donated” in a chemical reaction with another atom. What is the meaning of a mass number shown in parentheses?

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Answer 1

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Chapter 2, Problem 1ILQ

Visit this website (http://openstaxcollege.org/l/ptable) to view the periodic table. In the periodic table of the elements, elements in a single column have the same number of electrons that can participate in a chemical reaction. These electrons are known as “valence electrons.” For example, the elements in the first column all have a single valence electron—an electron that can be “donated” in a chemical reaction with another atom. What is the meaning of a mass number shown in parentheses?

Expert Solution & Answer

Summary Introduction

To analyze:

The meaning of mass number based on the given information.

Introduction:

Each element in the periodic table has a specific atomic number which is equal to the number of protons present in it. Each element also has a mass number which is equal to the total of a number of protons and neutrons.

Answer to Problem 1ILQ

The meaning of mass number shown in the parentheses is that the mass number of an element is the total number of neutrons and protons present in the nucleus of the atom.

Explanation of Solution

Given information:

The elements present in one column of the periodic table has the same number of electrons in the outermost shell or valence shell. These electrons can participate in the chemical reaction by donating, accepting or sharing of electrons.

The atom of an element has an equal number of protons and electrons but the number of electrons can change when the atom donates or accepts an electron in a chemical reaction to achieve the noble gas electronic configuration. The number of neutrons is fixed for an atom of the element. So, the mass number of an element is calculated by the total of a number of protons and the neutrons which are present in the nucleus of the atom.

Conclusion

The mass number is equal to the total number of protons and neutrons in the nucleus of the atom.

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Answer 2

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Chapter 2, Problem 1ILQ

Visit this website (http://openstaxcollege.org/l/ptable) to view the periodic table. In the periodic table of the elements, elements in a single column have the same number of electrons that can participate in a chemical reaction. These electrons are known as “valence electrons.” For example, the elements in the first column all have a single valence electron—an electron that can be “donated” in a chemical reaction with another atom. What is the meaning of a mass number shown in parentheses?

Expert Solution & Answer

Summary Introduction

To analyze:

The meaning of mass number based on the given information.

Introduction:

Each element in the periodic table has a specific atomic number which is equal to the number of protons present in it. Each element also has a mass number which is equal to the total of a number of protons and neutrons.

Answer to Problem 1ILQ

The meaning of mass number shown in the parentheses is that the mass number of an element is the total number of neutrons and protons present in the nucleus of the atom.

Explanation of Solution

Given information:

The elements present in one column of the periodic table has the same number of electrons in the outermost shell or valence shell. These electrons can participate in the chemical reaction by donating, accepting or sharing of electrons.

The atom of an element has an equal number of protons and electrons but the number of electrons can change when the atom donates or accepts an electron in a chemical reaction to achieve the noble gas electronic configuration. The number of neutrons is fixed for an atom of the element. So, the mass number of an element is calculated by the total of a number of protons and the neutrons which are present in the nucleus of the atom.

Conclusion

The mass number is equal to the total number of protons and neutrons in the nucleus of the atom.

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Answer 3

Textbook Question

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Chapter 2, Problem 1ILQ

Visit this website (http://openstaxcollege.org/l/ptable) to view the periodic table. In the periodic table of the elements, elements in a single column have the same number of electrons that can participate in a chemical reaction. These electrons are known as “valence electrons.” For example, the elements in the first column all have a single valence electron—an electron that can be “donated” in a chemical reaction with another atom. What is the meaning of a mass number shown in parentheses?

Expert Solution & Answer

Summary Introduction

To analyze:

The meaning of mass number based on the given information.

Introduction:

Each element in the periodic table has a specific atomic number which is equal to the number of protons present in it. Each element also has a mass number which is equal to the total of a number of protons and neutrons.

Answer to Problem 1ILQ

The meaning of mass number shown in the parentheses is that the mass number of an element is the total number of neutrons and protons present in the nucleus of the atom.

Explanation of Solution

Given information:

The elements present in one column of the periodic table has the same number of electrons in the outermost shell or valence shell. These electrons can participate in the chemical reaction by donating, accepting or sharing of electrons.

The atom of an element has an equal number of protons and electrons but the number of electrons can change when the atom donates or accepts an electron in a chemical reaction to achieve the noble gas electronic configuration. The number of neutrons is fixed for an atom of the element. So, the mass number of an element is calculated by the total of a number of protons and the neutrons which are present in the nucleus of the atom.

Conclusion

The mass number is equal to the total number of protons and neutrons in the nucleus of the atom.

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Answer 4

Textbook Question

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Chapter 2, Problem 1ILQ

Visit this website (http://openstaxcollege.org/l/ptable) to view the periodic table. In the periodic table of the elements, elements in a single column have the same number of electrons that can participate in a chemical reaction. These electrons are known as “valence electrons.” For example, the elements in the first column all have a single valence electron—an electron that can be “donated” in a chemical reaction with another atom. What is the meaning of a mass number shown in parentheses?

Expert Solution & Answer

Summary Introduction

To analyze:

The meaning of mass number based on the given information.

Introduction:

Each element in the periodic table has a specific atomic number which is equal to the number of protons present in it. Each element also has a mass number which is equal to the total of a number of protons and neutrons.

Answer to Problem 1ILQ

The meaning of mass number shown in the parentheses is that the mass number of an element is the total number of neutrons and protons present in the nucleus of the atom.

Explanation of Solution

Given information:

The elements present in one column of the periodic table has the same number of electrons in the outermost shell or valence shell. These electrons can participate in the chemical reaction by donating, accepting or sharing of electrons.

The atom of an element has an equal number of protons and electrons but the number of electrons can change when the atom donates or accepts an electron in a chemical reaction to achieve the noble gas electronic configuration. The number of neutrons is fixed for an atom of the element. So, the mass number of an element is calculated by the total of a number of protons and the neutrons which are present in the nucleus of the atom.

Conclusion

The mass number is equal to the total number of protons and neutrons in the nucleus of the atom.

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Answer 5

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Answer 6

Textbook Question

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Answer 7

Expert Solution & Answer

Summary Introduction

To analyze:

The meaning of mass number based on the given information.

Introduction:

Each element in the periodic table has a specific atomic number which is equal to the number of protons present in it. Each element also has a mass number which is equal to the total of a number of protons and neutrons.

Answer to Problem 1ILQ

The meaning of mass number shown in the parentheses is that the mass number of an element is the total number of neutrons and protons present in the nucleus of the atom.

Explanation of Solution

Given information:

The elements present in one column of the periodic table has the same number of electrons in the outermost shell or valence shell. These electrons can participate in the chemical reaction by donating, accepting or sharing of electrons.

The atom of an element has an equal number of protons and electrons but the number of electrons can change when the atom donates or accepts an electron in a chemical reaction to achieve the noble gas electronic configuration. The number of neutrons is fixed for an atom of the element. So, the mass number of an element is calculated by the total of a number of protons and the neutrons which are present in the nucleus of the atom.

Conclusion

The mass number is equal to the total number of protons and neutrons in the nucleus of the atom.

Answer 8

Expert Solution & Answer

Summary Introduction

To analyze:

The meaning of mass number based on the given information.

Introduction:

Each element in the periodic table has a specific atomic number which is equal to the number of protons present in it. Each element also has a mass number which is equal to the total of a number of protons and neutrons.

Answer to Problem 1ILQ

The meaning of mass number shown in the parentheses is that the mass number of an element is the total number of neutrons and protons present in the nucleus of the atom.

Explanation of Solution

Given information:

The elements present in one column of the periodic table has the same number of electrons in the outermost shell or valence shell. These electrons can participate in the chemical reaction by donating, accepting or sharing of electrons.

The atom of an element has an equal number of protons and electrons but the number of electrons can change when the atom donates or accepts an electron in a chemical reaction to achieve the noble gas electronic configuration. The number of neutrons is fixed for an atom of the element. So, the mass number of an element is calculated by the total of a number of protons and the neutrons which are present in the nucleus of the atom.

Conclusion

The mass number is equal to the total number of protons and neutrons in the nucleus of the atom.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

To analyze:

The meaning of mass number based on the given information.

Introduction:

Each element in the periodic table has a specific atomic number which is equal to the number of protons present in it. Each element also has a mass number which is equal to the total of a number of protons and neutrons.

Answer 12

Answer to Problem 1ILQ

The meaning of mass number shown in the parentheses is that the mass number of an element is the total number of neutrons and protons present in the nucleus of the atom.

Answer 13

Explanation of Solution

Given information:

The elements present in one column of the periodic table has the same number of electrons in the outermost shell or valence shell. These electrons can participate in the chemical reaction by donating, accepting or sharing of electrons.

The atom of an element has an equal number of protons and electrons but the number of electrons can change when the atom donates or accepts an electron in a chemical reaction to achieve the noble gas electronic configuration. The number of neutrons is fixed for an atom of the element. So, the mass number of an element is calculated by the total of a number of protons and the neutrons which are present in the nucleus of the atom.

Answer 14

Conclusion

The mass number is equal to the total number of protons and neutrons in the nucleus of the atom.

Answer 15

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