Choose the incorrect statement(s).

Options

A. `[Co(NH_(3))_(5)(NO_(2)]Cl_(2)` is obtained as the yellow form, in which the nitrate ligand is bound through oxygen (-ONO) and as the red form in which the nitrate ligand is bound through nitrogen `(-NO_(2))`
B. `[Pt(NH_(3))_(2)Cl_(2)][Pt(NH_(3))_(2)Br_(2)]` is a co-ordination isomer of `[Pt(NH_(3))_(4)][PtCl_(2)Br_(2)]`
C. A complex with molecular formula `CoSO_(4)Br.5NH_(3)` on treatment with `AgNO_(3)` can give either white ppt or yellow precipitate
D. `CrCl_(3).6NH_(3)` can exhibit solvate isomerism, very similar to ionisation isomerism

Answer

A, B

Explanation

(a) N-donor causes greater splitting, hence lower wavelength is absorbed in case of `-NO_(2)` (violet absorbed, yellow transmitted).
While, O-donor causes lower spitting, hence, larger wavelength is absorbed in case of -ONO (green absorbed, red transmitted).
(b) `[Pt(NH_(3))_(2)Cl_(2)][Pt(NH_(3))_(2)Br_(2)]` is neutral in nature.