Chapter 8, Problem 4KSP

Interpretation Introduction

Interpretation:

The number of lone pairs of electrons on central atom in perchlorate ion (${\text{ClO}}_{\text{4}}{}^{-}$) is to be calculated.

Concept introduction:

The octet rule states that every element in the main group should have eight electrons in its valence shell in order to attain anoble gas configuration.

Valence electrons are the electrons present in the outermost shell of an element.