Chapter 16.1, Problem 4PP

Interpretation Introduction

Interpretation:

(a) The atomic symbol for the given isotopes of iodine needs to be determined.

(b) The similarity and difference between the isotopes of iodine need to be explained.

Concept introduction:

• Isotopes: The atoms of an element with different mass number or atomic mass are called isotopes. They have same number of protons and electrons but different number of neutrons. Therefore, it is not necessary that all atoms of a given element contain the same number of neutrons in their nuclei. For example, hydrogen has three isotopes ${\text{H}}^{\text{1}}{\text{, H}}^{\text{2}}{\text{,H}}^{\text{3}}$ with 0, 1 and 2 neutrons in their nuclei respectively.