Chapter 9.1, Problem 9.1P

(a)

Interpretation Introduction

Interpretation:

The atomic number, mass number, number of protons and the number of neutrons in ${{}_{\text{38}}}^{\text{85}}\text{Sr}$ has to be given.

Concept introduction;

Atomic number (Z):

Atomic number of an element is the number of protons found in the nucleus of every atom of that element.

Mass number (A):

Mass number of an element is defined as the total number of protons and neutrons in an atom.

(b)

Interpretation Introduction

Interpretation:

The atomic number, mass number, number of protons and the number of neutrons in ${{}_{\text{31}}}^{\text{67}}\text{Ga}$ has to be given.

Concept introduction;

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The atomic number, mass number, number of protons and the number of neutrons in ${{}_{\text{34}}}^{\text{75}}\text{Se}$ has to be given.

Concept introduction;

Refer to part (a).