Chapter 4, Problem 38QAP

Write the atomic symbol $\left({}_Z^A\text{X}\right)$ for each of the isotopes described below.

1. Z=26,A=54
2. the isotope of iron with 30 neutrons
3. number of protons = 26, number of neutrons = 31
4. the isotope of nitrogen with 7 neutrons
5. Z=7,A=15
6. atomic number 7, number of neutrons = 8

Interpretation Introduction

(a)

Interpretation:

Write the atomic symbol ($\text{X}$ ) for the isotope which has$\text{Z}=26$ and$\text{A}=54$.

Concept Introduction:

The atomic symbol notation is as follows:

${\text{Atomic Symbol}}^{\text{Charge},+/-}$

Here A = mass number which is equal to the total number of protons + number of neutrons, Z = atomic number of any element which is also indicates Number of protons or number of electrons in the given atom.

Answer to Problem 38QAP

$\text{F}\text{e}$.

Explanation of Solution

Given Information:

$\text{Z}=26$ and$\text{A}=54$

Calculation:

Z = atomic number of any element = Number of protons or number of electron in the given atom

Atomic number = 26 which represent the element iron, Fe

A = mass number which is equal to the total number of protons + number of neutrons = 54

Therefore, The atomic symbol ($\text{X}$ ) for the isotope which has$\text{Z}=26$ and$\text{A}=54$ is$\text{F}\text{e}$.

Interpretation Introduction

(b)

Interpretation:

Write the atomic symbol of isotope of iron which has 30 neutrons.

Concept Introduction:

The atomic symbol notation is as follows:

${\text{Atomic Symbol}}^{\text{Charge},+/-}$

Here A = mass number which is equal to the total number of protons + number of neutrons, Z = atomic number of any element which is also indicates Number of protons or number of electrons in the given atom.

Answer to Problem 38QAP

The atomic symbol ($\text{X}$ ) for the isotope of iron which has 30 neutrons is$\text{F}\text{e}$.

Explanation of Solution

Given Information:

$\text{Z}=26$ and number of neutrons = 30

Calculation:

Z = atomic number of any element = Number of protons or number of electron in the given atom

Atomic number = 26 which represent the element iron, Fe

A = mass number which is equal to the total number of protons + number of neutrons

= 26 + 30

=56

Therefore, the atomic symbol ($\text{X}$ ) for the isotope of iron which has 30 neutrons is$\text{F}\text{e}$.

Interpretation Introduction

(c)

Interpretation:

Write the atomic symbol ($\text{X}$ ) for the isotope which has$\text{Z}=26$ and number of neutrons are 31.

Concept Introduction:

The atomic symbol notation is as follows:

${\text{Atomic Symbol}}^{\text{Charge},+/-}$

Here A = mass number which is equal to the total number of protons + number of neutrons, Z = atomic number of any element which is also indicates Number of protons or number of electrons in the given atom.

Answer to Problem 38QAP

The atomic symbol ($\text{X}$ ) for the isotope which has$\text{Z}=26$ and number of neutrons are 31

is$\text{F}\text{e}$.

Explanation of Solution

Given Information:

$\text{Z}=26$ and number of neutrons = 31

Calculation:

Z = atomic number of any element = Number of protons or number of electron in the given atom

Atomic number = 26 which represent the element iron, Fe

A = mass number which is equal to the total number of protons + number of neutrons

= 26+31 = 57

Therefore, the atomic symbol ($\text{X}$ ) for the isotope which has$\text{Z}=26$ and number of neutrons are 31 is$\text{F}\text{e}$.

Interpretation Introduction

(d)

Interpretation:

Write the atomic symbol ($\text{X}$ ) for the isotope of nitrogen with 7 neutrons.

Concept Introduction:

The atomic symbol notation is as follows:

${\text{Atomic Symbol}}^{\text{Charge},+/-}$

Here A = mass number which is equal to the total number of protons + number of neutrons, Z = atomic number of any element which is also indicates Number of protons or number of electrons in the given atom.

Answer to Problem 38QAP

The atomic symbol ($\text{X}$ ) for the isotope of nitrogen with 7 neutrons is$\text{N}$.

Explanation of Solution

Given Information:

Number of neutrons of nitrogen = 7

Calculation:

Z = atomic number of any element = Number of protons or number of electron in the given atom

Atomic number = 7 for nitrogen

A = mass number which is equal to the total number of protons + number of neutrons

= 7+7=14

Therefore, the atomic symbol ($\text{X}$ ) for the isotope of nitrogen with 7 neutrons is$\text{N}$.

Interpretation Introduction

(e)

Interpretation:

Write the atomic symbol ($\text{X}$ ) for the isotope which has$\text{Z}=7$ and$\text{A}=15$.

Concept Introduction:

The atomic symbol notation is as follows:

${\text{Atomic Symbol}}^{\text{Charge},+/-}$

Here A = mass number which is equal to the total number of protons + number of neutrons, Z = atomic number of any element which is also indicates Number of protons or number of electrons in the given atom.

Answer to Problem 38QAP

The atomic symbol ($\text{X}$ ) for the isotope which has$\text{Z}=7$ and$\text{A}=15$ is$\text{N}$.

Explanation of Solution

Given Information:

$\text{Z}=7$ and$\text{A}=15$

Calculation:

Z = atomic number of any element = Number of protons or number of electron in the given atom

Atomic number = 7 which represent the element nitrogen, N

A = mass number which is equal to the total number of protons + number of neutrons = 15

Therefore, The atomic symbol ($\text{X}$ ) for the isotope which has$\text{Z}=7$ and$\text{A}=15$ is$\text{N}$.

Interpretation Introduction

(f)

Interpretation:

Write the atomic symbol ($\text{X}$ ) for the isotope which atomic number;$\text{Z}=7$ and numbers of neutrons are 8.

Concept Introduction:

The atomic symbol notation is as follows:

${\text{Atomic Symbol}}^{\text{Charge},+/-}$

Here A = mass number which is equal to the total number of protons + number of neutrons, Z = atomic number of any element which is also indicates Number of protons or number of electrons in the given atom.

Answer to Problem 38QAP

The atomic symbol ($\text{X}$ ) for the isotope which has atomic number;$\text{Z}=7$ and numbers of neutrons are 8 is$\text{N}$.

Explanation of Solution

Given Information:

Atomic number;$\text{Z}=7$ and numbers of neutrons = 8

Calculation:

Z = atomic number of any element = Number of protons or number of electron in the given atom

Atomic number = 7 which represent the element nitrogen, N

A = mass number which is equal to the total number of protons + number of neutrons

=7+8

=15

Therefore, The atomic symbol ($\text{X}$ ) for the isotope which has atomic number;$\text{Z}=7$ and numbers of neutrons are 8 is$\text{N}$.