$T i^{4 +}$ ion is colourless. Give reason.

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Solution

The electronic configuration of Ti is $[A r] 3 d^{2} 4 s^{2}$
The electronic configuration of Ti $^{4 +}$ is $[A r] 3 d^{0} 4 s^{0}$ .
Since no unpaired electron is present in Ti $^{4 +}$ , it is colourless.

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