MHT CET 2026 Chemistry question

Which of the following prediction is correct when the transition metal ion is colourless?

(A)it contains 0 unpaired electronsCorrect
(B)it contains 1 unpaired electrons
(C)it contains 2 unpaired electrons
(D)it contains 3 unpaired electrons

Answer: (A)

Solution

The colour of transition metal ions arises from d-d transitions, which need unpaired d electrons that can be promoted to a higher d orbital. Ions with (e.g. , ) or (e.g. , )

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Question ID VK-101485