Chapter 21, Problem 127SCQ

Interpretation Introduction

Interpretation:

To observe the trend in the given data and comment on the chemistry of group $\text{3A}$ elements.

Concept introduction:

Reduction potential can be defined as the tendency of an  element to get reduced by gain of electrons. More negative the reduction potential, stronger is the reducing agent.

Down the group the reduction potential increases as the elements prefer to be present in lower oxidation state due to inert pair effect. For example, in group $\text{3A}$ elements, aluminium tends to stay in $+3$ oxidation number but thallium is more stable in $+1$ oxidation number.