Question

Match the following

$\begin{array}{cc}\text{(i) Sodium}& a.2^{2+}\\ \text{(ii) Aluminium}& b{.3}^{+}\\ \text{Barium}& c.1^{+}\\ & d.4^{+}\end{array}$

• A. (i)-a(ii)-b(iii)-c
• B. (i)-b(ii)-c(iii)-d
• C. (i)- a(ii)-b(iii)-d
• D. (i)-c(ii)-d(iii)-a

Answer 1

The correct option is D

(i)-c(ii)-d(iii)-a

The valency of sodium +1 as it belong to the alkali metals which has tendency to lose electron and are electropositive in nature . Aluminium valency is 3+ and it belongs to p block elements and Barium belongs to alkaline earth metals and its valency is 2+ as it forms electropositive element.