Chapter 4, Problem 89AP

Interpretation Introduction

Interpretation: To explain and clarify the difference between atomic number and mass number.

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.

The charge of an ion is showed by + or − sign on the right-side super script.

The atoms of same element with different mass number or atomic mass are called isotopes.