1.

Which of the following complexes have a maximum number of unpaired electrons ?

Answer»

`NI(CO)_(4)`
`[Co(NH_(3))_(4)(NO_(2))_(2)]^(+)`
`[AG(CN)_(2)]^(-)`
`[CuBr_(4)]^(2-)`

Solution :`[OVERSET(+2)CuBr_(4)]^(2-)d^(8) config.(sp^(3))`


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