Chapter 11, Problem 79E

Interpretation Introduction

Interpretation:

The chemical similarities among chlorine, bromine, and iodine in terms of their electron configurations are to be stated.

Concept introduction:

The elements present in the group $\text{7A}/7$ make up the family known as halogens. Halogens have seven valence electrons. Halogens have a tendency to gain one electron to complete octet of electrons, which gives a noble gas configuration and forms an ion with $-1$ charge.