The structure of diborane contains:

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Question

(A) The structure of $B_2H_6$ consists of two boron atoms and six hydrogen atoms.Four hydrogen atoms are terminal hydrogen atoms,each connected to a b

Vedclass · Accepted Answer

Four $2C-2e$ bonds and two $3C-2e$ bonds

Vedclass · Answer

(A) The structure of $B_2H_6$ consists of two boron atoms and six hydrogen atoms.Four hydrogen atoms are terminal hydrogen atoms,each connected to a boron atom by a normal covalent bond. These are $2$-center-$2$-electron $(2C-2e)$ bonds.Two hydrogen atoms are bridging hydrogen atoms,each connected to both boron atoms. These bridge bonds are $3$-center-$2$-electron $(3C-2e)$ bonds.Therefore,the structure contains four $2C-2e$ bonds and two $3C-2e$ bonds.

Column-$I$	Column-$II$
$A$. Diborane	$1$. Used as a flux for soldering metals
$B$. Gallium	$2$. Crystalline form of silica
$C$. Borax	$3$. Banana bonds
$D$. Alumino silicate	$4$. Low melting,high boiling,useful for measuring high temperatures
$E$. Quartz	$5$. Used as catalyst in petrochemical industries

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