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  4. Hybridization of boron in diborane is

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Q. Hybridization of boron in diborane is

TS EAMCET 2020

Solution:

Boron atom in diborane is known to be $s p^{3}$ hybridised because it has four hybrid-orbitals. Three of these has one electron each and one is an empty orbital. The two electrons of hybrid orbitals in each of boron atom form two bonds with $1 s$ of hydrogen atoms. The two atoms of boron left with that of each unpaired electron orbital and empty orbital forms two bridging $(B-H-B)$ bonds with that of two $1 s$ hydrogen atoms. It is also called banana bond.