Chapter 2.2, Problem 2PE

(a)

Interpretation Introduction

Interpretation: The number of protons and neutrons in the in the given radioactive nuclide are to be identified.

Concept introduction: The atomic number of cobalt is $27$.

The atomic number of iodine is $53$.

The atomic number of iridium is $77$.

The atomic number is the number of protons present in the nucleus of an atom and the mass number is the total number of protons and neutrons present in the nucleus of the atom.

To determine: The number of protons and neutrons in ${}^{60}\text{Co}$.

(b)

Interpretation Introduction

To determine: The number of protons and neutrons in ${}^{131}\text{I}$.

(c)

Interpretation Introduction

To determine: The number of protons and neutrons in ${}^{192}\text{Ir}$.