Q38 · CSIR-NET Chemistry, December 2017
Paper: CSIR-NET December 2017 · Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Charge Transfer Spectra · Marks: 2 · Difficulty: Medium
$\mathrm{Br}_{2}$ with propanone forms a charge transfer complex and $\mathrm{I}_{2}$ forms triiodide anion with $\mathrm{I}^{-}$. This implies that
(a)both $\mathrm{Br}_{2}$ and $\mathrm{I}_{2}$ act as bases
(b)both $\mathrm{Br}_{2}$ and $\mathrm{I}_{2}$ act as acids
(c)$\mathrm{Br}_{2}$ acts as an acid and $\mathrm{I}_{2}$ acts as a base
(d)$\mathrm{Br}_{2}$ acts as a base and $\mathrm{I}_{2}$ acts an an acid
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
Br₂ accepts electron density from acetone and I₂ accepts I⁻ — both are Lewis acids (b).
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