Chapter 18, Problem 45E

Interpretation Introduction

Interpretation: The explanation should be provided for existence of Group 5A elements as N₂ and other as P₄, As₄ and Sb₄ molecules.

Concept Introduction: Elements in group 5A of periodic table is said to be pnictogens and this group contains five elements: $\text{N, P, As, Sb}$ and $\text{Bi}$ . On moving down the group the atomic size increases due to addition of new shells thus, the atomic size increases on moving from N to Bi.