Chapter 3, Problem 59A

(a)

Interpretation Introduction

Interpretation:

Using the $X$ format, the element or ion needs to be identified.

Concept Introduction:

Every matter is made of chemicals. Chemistry is very important for the study of everything. Chemistry is all about how something interacts to affect the structure, composition, as well as properties of substances.

Answer to Problem 59A

The element with the given chemical symbol, atomic number and mass number is:

  $\text{N}\text{a}$

Explanation of Solution

Protons are defined as positively charged $\left(+ve\right)$ sub-atomic particles/ units found in the nucleus of an atom. The number of protons tells about the atomic number of elements.

Electrons are negatively charged subatomic particles found orbiting the nucleus of an atom.

For neutral atom, the number of Electron = number of protons.

Neutrons are subatomic particles found in the nucleus of an atom which is neutral.

An atom has a nucleus with a positive charge due to its protons and has electrons in the space surrounding the nucleus at a relatively large distance from it.

For $\text{X}$ , $\text{X}$ is the element symbol and A is the mass number of the element and Z is the atomic number of the element.

From the given figure, the first element contains $11$ electron, $11$ protons, and $12$ neutrons,

The atomic number of the element is $11$ and mass number is $23$ .

Hence, the first element is $\text{N}\text{a}$ .

(b)

Interpretation Introduction

Interpretation:

Using the $\text{X}$ format, the element or ion needs to be identified.

Concept Introduction:

Every matter is made of chemicals. Chemistry is very important for the study of everything. Chemistry is all about how something interacts to affect the structure, composition, as well as properties of substances.

Answer to Problem 59A

The elements with the chemical symbol and atomic number and mass number -

  $\text{N}\text{a}$

Explanation of Solution

Protons are defined as positively charged $\left(+ve\right)$ sub-atomic particles/ units found in the nucleus of an atom. The number of protons tells about the atomic number of elements.

Electrons are negatively charged subatomic particles found orbiting the nucleus of an atom.

For neutral atom, the number of Electron = number of protons.

Neutrons are subatomic particles found in the nucleus of an atom which is neutral.

An atom has a nucleus with a positive charge due to its protons and has electrons in the space surrounding the nucleus at a relatively large distance from it.

For $\text{X}$ , $\text{X}$ is the element symbol and A is the mass number of the element and Z is the atomic number of the element.

From the given figures

The second element contains $11$ electron, $11$ protons, and $13$ neutrons,

The atomic number of the element is $11$ and mass number is $24$ ,

Hence, the second element is $\text{N}\text{a}$ .

(c)

Interpretation Introduction

Interpretation:

Using the $\text{X}$ format, the element or ion needs to be identified.

Concept Introduction:

Every matter is made of chemicals. Chemistry is very important for the study of everything. Chemistry is all about how something interacts to affect the structure, composition, as well as properties of substances.

Answer to Problem 59A

The element with the chemical symbol and atomic number and mass number is:

  $\text{M}\text{g}$

Explanation of Solution

Protons are defined as positively charged $\left(+ve\right)$ sub-atomic particles/ units found in the nucleus of an atom. The number of protons tells about the atomic number of elements.

Electrons are negatively charged subatomic particles found orbiting the nucleus of an atom.

For neutral atom, the number of Electron = number of protons.

Neutrons are subatomic particles found in the nucleus of an atom which is neutral.

An atom has a nucleus with a positive charge due to its protons and has electrons in the space surrounding the nucleus at a relatively large distance from it.

For $\text{X}$ , $\text{X}$ is the element symbol and A is the mass number of the element and Z is the atomic number of the element.

The element contains $12$ electron, $12$ protons, and $12$ neutrons,

The atomic number of the element is $12$

And the mass number is $24$ ,

Hence the third element is $\text{M}\text{g}$ .