1.

In which of the following paris, both ions are coloured in aqueous solution?

Answer»

`Ni^(2+),Ti^(4+)`
`Ni^(2+),Ti^(3+)`
`SC^(3+),Ti^(3+)`
`CR^(2+),Zn^(2+)`

Solution :`Ni^(2+)(Z=28)=[AR


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