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

Answer

A

Explanation

Due to the absence of unpaired electron `TiF_(6)""^(-2) & Cu_(2)Cl_(2)` colouless species.