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Question
Salts of Ti4+ are colourless. Give reason.
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Solution
Ti4+ is colourless
Ti(22) = 1s2, 2s2, 2p6, 3s2, 3p6, 3d2, 4s2
Ti4+ = 1s2, 2s2, 2p6, 3s2, 3p6, 3d0, 4s0
No unpaired electron is present in Ti4+, no d – d
Transition takes place. Thus Ti4+ salts are colourless.
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