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Question

Assertion :[Ti(H2O)6]3+ is coloured while [Sc(H2O)6]3+ is colourless. Reason: d-d transition is not possible in [Sc(H2O)6]3+

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
[Ti(H2O)6]3+ contains one unpaired electron and hence is purple colored whereas in [Sc(H2O)6]3+, all the electrons are paired and hence is colorless. d-d transition is not present in [Sc(H2O)6]3+.
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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