Question

Given below are the statements about diborane

(a) Diborane is prepared by the oxidation of NaBH₄ with I₂ 

(b) Each boron atom is in sp² hybridized state 

(c) Diborane has one bridged 3 centre-2-electron bond 

(d) Diborane is a planar molecule 

The option with correct statement(s) is - 

(1) (c) and (d) only 

(2) (a) only 

(3) (c) only 

(4) (a) and (b) only

Answer 1

Answer is : (2) (a) only

Diborane is prepared by the reaction of NaBH4 with I₂. 

2NaBH₄ + I₂ → B₂H₆ + 2NaI + H₂ 

In diborane, 'B' is sp³ hybrid, it is Non-planar and two 3c–2e^– bonds are present.