1.

The blue complex ion formad on addition of conc. NH_4OH solution to a Cu^(2+) salt solution is :

Answer»

`[CU(NH_4)_2]^(2+)`
`[Cu(NH_3)_2]^(2+)`
`[Cu(NH_3)_4]^(2+)`
`[Cu(NH_4)_3]^(2+)`

Answer :C


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