1.

Which of the following complex acts as good reducing agent ?

Answer»

`[Cu(NH_(3))]^(2+)`
`[Ag(NH_(3))_(2)]^(+)`
`[Fe(CN)_(6)]^(3-)`
`[Co(NO_(2))_(6)]^(4-)`

Solution :(d)`[Co(NO_(2))_(6)]^(4-)to[Co(NO_(2))_(6)]^(3-)+e^(-)`
(Good R.A.) LTBR. Electron is removed from 5s-orbital
(TRANSFERENCE from 3d to 5s )


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