JEE PYQ: P Block Elements Question 14
Question 14 - 2021 (25 Feb Shift 1)
The correct statement about $\text{B}_2\text{H}_6$ is:
(1) All B-H-B angles are of $120^\circ$.
(2) Its fragment, $\text{BH}_3$, behaves as a Lewis base.
(3) Terminal B-H bonds have less p-character when compared to bridging bonds.
(4) The two B $-$ H $-$ B bonds are not of same length.
Show Answer
Answer: (3)
Solution
Terminal bond angle is greater than that of bridge bond angle. Bond order $\propto$ S-character $\propto \frac{1}{\text{p-character}}$.