Question

Assertion: $P_2{O}_3$ is more basic than $N_2{O}_3$.
Reason: Metallic nature of the oxides increases down the group.

• A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
• B. Both Assertion and Reason are true and Reason is not the correct explanation of Assertion
• C. Assertion is true and Reason is false
• D. Assertion is false but Reason is true

Answer 1

The correct option is A Both Assertion and Reason are true and Reason is the correct explanation of Assertion

When we go down the group, atomic radius increase. Due to this ionisation energy decrease and hence a tendency to lose electron also increases (i.e, metallic character is increased)

Since metallic character increase down the group, the acidic character of oxidises decreases down the group i.e, basicity increases down the group.

Hence the order of basicity is $N_2{O}_3<P_2{O}_3$