Given below are the statements about diborane

Question:

Given below are the statements about diborane

(a) Diborane is prepared by the oxidation of $\mathrm{NaBH}_{4}$ with $\mathrm{I}_{2}$

(b) Each boron atom is in $\mathrm{sp}^{2}$ hybridized state

(c) Diborane has one bridged 3 centre-2-electron bond

(d) Diborane is a planar molecule

The option with correct statement(s) is -

  1. (c) and (d) only

  2. (a) only

  3. (c) only

  4. (a) and (b) only


Correct Option: , 2

Solution:

Diborane is prepared by the reaction of $\mathrm{NaBH}_{4}$ with $\mathrm{I}_{2}$.

$2 \mathrm{NaBH}_{4}+\mathrm{I}_{2} \rightarrow \mathrm{B}_{2} \mathrm{H}_{6}+2 \mathrm{NaI}+\mathrm{H}_{2}$

In diborane, 'B' is $\mathrm{sp}^{3}$ hybrid, it is Non-planar and two $3 c-2 e^{-}$bonds are present.

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