Question

Consider the statements related to group 15 hydrides.
(A) Stability of hydrides decreases down the group.
(B) Reducing nature of hydrides increases down the group.
(C) Lone pair donating tendency increases down the group.
(D) H–E–H bond angle decreases down the group.

• A. A, B and C are correct.
• B. A, B and D are correct.
• C. B and C are correct.
• D. A, C and D are correct.

Answer 1

The Correct Option is B

Step 1: Understanding Statement A.
The stability of hydrides in group 15 decreases as we move down the group due to the increasing size of the central atom and the decrease in bond strength with hydrogen. Hence, Statement A is correct.
Step 2: Understanding Statement B.
The reducing nature of hydrides increases down the group as the central atom becomes more electropositive. This makes it easier for the hydrides to donate electrons. Hence, Statement B is correct.
Step 3: Understanding Statement C.
The lone pair donating tendency also increases down the group because the larger size of the central atom results in weaker bonds, allowing the lone pair to be donated more easily. Hence, Statement C is correct.
Step 4: Understanding Statement D.
As we move down the group, the size of the central atom increases, which leads to a decrease in the bond angle. Hence, Statement D is correct.
Step 5: Conclusion.
Since all statements A, B, and D are correct, the correct answer is (B). Final Answer: A, B and D are correct.