1.

Which of the following complex ion is not expected to absorb visible light ?

Answer»

`[NI(CN)_4]^(2-)`
`[Cr(NH_3)_6]^(3+)`
`[FE(H_2O)_6]^(2+)`
`[Ni(H_2O)_6]^(2+)`

ANSWER :A


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