1.

Among TiF_(6)^(2-), CoF_(6)^(3-), Cu_(2)Cl_(2)" and "NiCl_(4)^(2-) the colourless species are :

Answer»

`CoF_(6)^(3-)" and "NiCl_(4)^(2-)`
`TiF_(6)^(2-)" and "CoF_(6)^(3-)`
`NiCl_(4)^(2-)" and "Cu_(2)Cl_(2)`
`TiF_(6)^(2-)" and "Cu_(2)Cl_(2)`

Solution :`OVERSET(+4)TiF_(6)^(2-), d^(0)` CONFIG. , `overset(+1)Cu_(2)Cl_(2),d^(10)` config.


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