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Q 2762280135.    

Assertion : A solution of `[Ni (H_2O)_6 ]^(2+)` is green but a solution of `[Ni(CN)_4]^(2-)` is colourless.

Reason : Energy difference between d levels (i.e. `Delta`) for `H_2 O` complex (paramagnetic) is in the visible region and that for the cyano complex (diamagnetic) is in the UV region.

A Both A and R individually true and R is the correct explanation of A
B Both A and R are individually true but R is not the correct explanation of A
C A is true but R is false
D A is false but R is true

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