Question

Some statements about the structure of diborane are given below :
A) NMR and RAMAN spectral studies have confirmed that four hydrogens of diborane are one type and remaining two are of another type.
B) Electron diffraction studies have shown that diborane contains two coplanar $B{H}_2$ groups.
C) Diborane is a planar molecular.
D) Boron of diborane undergoes $s{p}^2$ hybridisation
The correct statements are :

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

Answer 1

Answer: (B)

only A and B

Diborane is not planar.
$B$ is $s{p}^3$ hybridised
There are $4\times$ 2centred - 2 electron $B-H$ bonds and $2\times$ 3 centred -2 electron bonds in diborane.