Chapter 2.2, Problem 2.3PSP

(a)

Interpretation Introduction

Interpretation:

The mass number of a phosphorous atom with $16$ neutrons has to be determined.

Concept Introduction:

Atomic Number:

The number of protons in the nucleus of an atom is called the atomic number of the element and is given by the symbol $\text{Z}$.

Mass Number:

The mass number of an atom is the sum of the number of protons and the number of neutrons in the atom and is represented by the symbol $\text{A}$

(b)

Interpretation Introduction

Interpretation:

The number of protons, neutrons and electrons in neon $\text{-22}$ atom has to be found.

Concept Introduction:

Refer to part (a)

(c)

Interpretation Introduction

Interpretation:

The symbol of the atom with $\text{82}$ protons and $\text{125}$ neutrons has to be determined.

Concept Introduction:

Refer to part (a)