Boron forms a number of hydrides having the general formulae \( B_{n} H_{n+4} \) and \( B_{n} H_...

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Boron forms a number of hydrides having the general formulae \( B_{n} H_{n+4} \) and \( B_{n} H_{n+6} \). These hydrides are called boranes. The simplest hydride of boron is diborane, \( B_{2} H_{6} \). Boranes
contain special types of bonds known as multicentre bonds. Boranes have high heat of combustion.
In \( \mathrm{B}_{2} \mathrm{H}_{6} \) :
(A) there is direct boron-boron bond
(B) the boron atoms are linked through hydrogen bridges
(C) all the \( \mathrm{B}-\mathrm{H} \) bond distances are equal
(D) all the atoms are in one plane
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