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Question

Assertion :[Sc(H2O)6]3+ is colourless. Reason: d-d transition is not possible in [Sc(H2O)6]3+
  1. Assertion is true but the reason is false.
  2. Assertion is false but the reason is true.
  3. Both assertion and reason are true and the reason is a correct explanation of assertion.
  4. Both assertion and reason are true but reason is not a correct explanation of assertion.

A
Assertion is false but the reason is true.
B
Both assertion and reason are true but reason is not a correct explanation of assertion.
C
Both assertion and reason are true and the reason is a correct explanation of assertion.
D
Assertion is true but the reason is false.
Solution
Verified by Toppr

[Sc(H2O)6]3+ contain Sc3+ ion. It has 3d0 configuration and contains 0 unpaired electrons. Hence the complex is colorless.

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