Q67 · CSIR-NET Chemistry, June 2011
Paper: CSIR-NET June 2011 · Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Charge Transfer Spectra · Marks: 2 · Difficulty: Easy
The complex $\left[\mathrm{Mn}(\mathrm{H}_{2}\mathrm{O})_{6}\right]^{2+}$ has very light pink colour. The best reason for it is
(a)the complex does not have a charge transfer transition.
(b)d-d transitions here are orbital forbidden but spin allowed.
(c)d-d transitions here are orbital allowed but spin forbidden.
(d)d-d transitions here are both orbital forbidden and spin forbidden.
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
High-spin d⁵ Mn²⁺ bands are both spin- and Laporte-forbidden (d).
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