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QNEET-2018-Ch-864: NEET 2018 Chemistry - Class 12 NEET-2018-Ch-864 Solution: Which one of the following ions exhibits d-d transition and…
Which one of the following ions exhibits d-d transition and paramagnetism as well?
Multiple Choice Options
- A CrO 4 2-
- B Cr 2 O 7 2�
- C MnO 4 -
- D MnO 4 2-
Step-by-Step Verified Solution
In CrO 4 2- Cr +6 (n = 0) diamagnetic
In Cr 2 O 7 2� Cr +6 (n = 0) diamagnetic
In MnO 4 - Mn +7 (n = 0) diamagnetic
In MnO 4 2- Mn +6 (n = 1) paramagnetic
In MnO 4 2- , one unpaired electron(n) is present in
d-orbital so, d-d transition is possible.