Chapter 18, Problem 9E

Interpretation Introduction

Interpretation: The evidence that support putting hydrogen in group 1A needs to be explained, also, the dissimilarities of it with group-1A elements need to be explained.

Concept Introduction: In the Long form of periodic table, the non-metals are mainly placed at the right side of the periodic table that is called as p-block elements. Metals make the 75 % part of the periodic table. Metals are electropositive elements and mainly form ionic compound whereas non-metals are electronegative elements and can form either covalent or ionic compounds.