Question

Among `TiF_(6)^(2-), CoF_(6)^(3-), Cu_(2)C1_(2)` and `NiC1_(4)^(2-)` (At. No. `Ti = 22, Co = 27, Cu = 29, Ni = 28)`, the colourless species are -
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 1

Correct Answer - D
`Ti_(6)^(2-)` and `Cu_(2)Cl_(2)` due to absence of unpaired electrons.