Question

The molecular shapes of diborane is shown: Consider the following statements for diborane:
1. Boron is approximately $s{p}^3$ hybridised.
2. $B-H-B$ angle is ${180}^{\circ }$.
3. There are two terminal $B-H$ bonds for each boron atom.
4. There are only $12$ bonding electrons available.
The correct statement(s) is/are:

• A. $1,3$ and $4$ are correct
• B. $1,2$ and $3$ are correct
• C. $2,3$ and $4$ are correct
• D. $1,2$ and $4$ are correct

Answer 1

The correct option is A $1,3$ and $4$ are correct

In diborane, boron atom undergoes $s{p}^3$ hybridization.
In diborane, the $B-H-B$ angle is ${83}^o$.
Each boron atom is linked to two terminal hydrogen atoms and two bridged hydrogen atoms.
There are four $2c-2e$ bonds and two $3c-2e$ bonds.
Hence, only $12$ bonding electrons are available