Q38 · CSIR-NET Chemistry, June 2016

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

Complex $\left[\mathrm{Cr}(\text{bipyridyl})_{3}\right]^{3+}$, shows red phosphorescence due to transition
(a)$^{4}T_{2g} \leftarrow {}^{4}A_{2g}$
(b)$^{4}T_{1g} \leftarrow {}^{4}A_{2g}$
(c)$^{4}A_{2g} \leftarrow {}^{2}E_{g}$
(d)$^{2}E_{g} \leftarrow {}^{4}A_{2g}$
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
Phosphorescence ²E_g → ⁴A₂g (c).

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