Q29 · CSIR-NET Chemistry, June 2016

Paper: CSIR-NET June 2016 · Subject: Inorganic Chemistry · Chapter: Chemical Bonding · Topic: Chemical Bonding – General · Marks: 2 · Difficulty: Easy

The number of 3c-2e bonds present in $\mathrm{Al}\left(\mathrm{BH}_{4}\right)_{3}$ is-
(a)four
(b)three
(c)six
(d)zero
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
Each BH₄⁻ binds aluminium through two Al–H–B bridges (bidentate); three ligands give six 3c-2e bonds.

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