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Assertion: [Ti(H(2)O)(6)]^(4+) is colour...

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+)`.

A

If assertion is true but the reason is false

B

If assertion is false but reason is true

C

If both assertion and reason are true and the reason is the correct explanation of assertion

D

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

Text Solution

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The correct Answer is:
B
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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[Ti(H_(2)O)_(6)]^(3+) is coloured while [Sc(H_(2)O)_(6)]^(3+) is colourless. Why?

These questions consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses: Assertion: [Ti(H_2O)_6]^(3+) is coloured while [Sc(H_2O)_6]^(3+) is colourless. Reason: d-d transition is not possible in [Sc(H_2O)_6]^(3+) .

[Sc(H_(2)O)_(6)]^(3+) ion is

[Sc(H_(2)O)_(6)]^(3+) ion is

The colour of [Ti(H_(2)O)_(6)]^(3+) is due to

[Co(H_(2)O)_(6)]^(3+) complex is

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