1.

Violet coloured complex among the following is

Answer»

`[NI(H_2O)_6]^(2+)`
`[Ni(H_2O)(en)]^(2+)`
`[Ni(H_2O)_2(en)_2]^(2+)`
`[Ni(en)_3]^(2+)`

ANSWER :D


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