Chapter 2, Problem 2.63AP

(a)

Interpretation Introduction

Interpretation:

The isotopic symbol of an element that contains $\text{53}$ protons and $74$ neutrons in the nucleus has to be given.

Concept Introduction:

Atomic number (Z):

Atomic number of an element is the number of protons or the number of electrons 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 isotopic symbol of an element that contains $35$ electrons and the mass number of element is $79$ has to be given.

Concept Introduction:

Refer to part (a).