Chapter 2, Problem 2.34QP

Interpretation Introduction

Interpretation: The groups used in the modern periodic table that were labeled in the Mendeleev’s periodic table as $\text{"HR,"}{\text{"H}}_2\text{R,"}$ and ${\text{"H}}_3\text{R"}$ hydrides are to be stated.

Concept introduction: Mendeleev arranged the elements on left side of his periodic table on the basis of formulas of the binary compounds they form with oxygen and hydrogen.

To determine: The groups used in the modern periodic table, for the Mendeleev’s labeled $\text{"HR,"}{\text{"H}}_2\text{R,"}$ and ${\text{"H}}_3\text{R"}$ hydrides.