The bonding in diborane $(B_2H_6)$ can be described by

  • A
    $4$ two-centre-two-electron bonds and $2$ three-centre-two-electron bonds
  • B
    $3$ two-centre-two-electron bonds and $3$ three-centre-two-electron bonds
  • C
    $2$ two-centre-two-electron bonds and $4$ three-centre-two-electron bonds
  • D
    $4$ two-centre-two-electron bonds and $4$ two-centre-two-electron bonds

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$1.$ Boron is approximately $sp^3$ hybridized.
$2.$ $B-H-B$ angle is $180^{\circ}$.
$3.$ There are two terminal $B-H$ bonds for each boron atom.
$4.$ There are only $12$ bonding electrons available.
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