1.

Assertion: [Ti(H_(2)O)_(6)]^(4+) is coloured while [Sc(H_(2)O)_(6)]^(3+) is colourless. Reason: d-d transition is not possible in [Sc(H_(2)O)_(6)]^(3+).

Answer»

If assertion is true but the REASON is false
If assertion is false but reason is true
If both assertion and reason are true and the reason is the CORRECT explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion

Solution :Both `[Ti(H_(2)O)_(6)]^(4+) and [Sc(H_(2)O)_(6)]^(3+)` are colourless, due to absence of free electrons in 3d subshell.


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