Medium MCQ +4 / -1 PYQ · JEE Mains 2021

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 statements is :

  1. A (c) and (d) only
  2. B (a) only Correct answer
  3. C (c) only
  4. D (a) and (b) only

Solution

Diborane is prepared by the reaction of NaBH<sub>4</sub> with I<sub>2</sub>.<br><br>2NaBH<sub>4</sub> + I<sub>2</sub> $\to$ B<sub>2</sub>H<sub>6</sub> + 2NaI + H<sub>2</sub><br><br>In diborane, 'B' is sp<sup>3</sup> hybrid, it is Non-planar and two 3c-2e<sup>$-$</sup> bonds are present.

About this question

Subject: Chemistry · Chapter: p-Block Elements · Topic: Group 13: Boron Family

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