Chapter 21, Problem 21.19QP

Interpretation Introduction

Interpretation: The reason for elements in groups $1,2$ and $13-18$ to be referred as “s-block” and “p-block” elements is to be stated.

Concept introduction: Elements found in groups $1,2$ and $13-18$ in the periodic table are known as main group elements.

To determine: An explanation corresponding to the fact that elements in groups $1,2$ and $13-18$ are referred as “s-block” and “p-block” elements by some chemists.