Amongst `[TiE_(6)]^(2-), [CoF_(6)]^(3-), Cu_(2)Cl_(2)` and `[NiCl_(4)]^(2-)` [Atomic no. `Ti = 22, Co = 27, Cu = 29, Ni = 28`] the colourless species are :
(A) `[TiF_(6)]^(2-)` and `[Cu_(2)Cl_(2)]`
(B) `Cu_(2)Cl_(2)` and `[NiCl_(4)]^(2-)`
(C) `[TiF_(6)]^(2-)` and `[CoF_(6)]^(3-)`
(D) `[CoF_(6)]^(3-)` and `[NiCl_(4)]^(2-)`

Options

A. `CoF_(6)^(3-) and NiCl_(4)^(2-)`
B. `TiF_(6)^(2-) and CoF_(6)^(3-)`
C. `Cu_(2)Cl_(2) and NiCl_(4)^(2-)`
D. `TiF_(6)^(2-) and Cu_(2)Cl_(2)`

Answer

D

Explanation

In both `TiF_(6)^(2-) and Cu_(2)Cl_(2)` , these no d-electrons or no unpaired electrons so , there are colourless.