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p-Block Elements - I
hard
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 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 :
A
$(c)$ and $(d)$ only
B
$(c)$ only
C
$(a)$ only
D
$(a)$ and $(b)$ only
(JEE MAIN-2021)
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, ' $B^{\prime}$ is $\mathrm{sp}^{3}$ hybrid, it is Non-planar and two $3 \mathrm{c}-2 \mathrm{e}^{-}$bonds are present.
Standard 11
Chemistry
