1) The bonding in diborane $[B_{2}H_{6}]$ 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 Answer: Option AExplanation:Diborane molecular formula $B_{2}H_{6}$ Diborane has 4 two centre -two electron $(2C-2e^{-})$ bonds and 2 three -centre -two electron $(3C-2e^{-})$ bonds