1.

Amongst the following complexes, (mentioned without any charge) how many of them are expected to have a +vely charged counter ion ? (a) [PtCl_(6)]""(b) [Ni(NH_(3))_(4)] (c ) [Fe(C_(2)O_(4))_(3)]""(d) [Co(en)_(3)] (e ) [Fe(CN)_(6)]""(f) [PtCl_(4)] (g) [Ni(CO)_(4)]""(h) [Co(NH_(3))_(6)] (i) [Cu(CN)_(4)]

Answer»


Solution :`[PtCl_(6)]^(2-),""[Ni(NH_(3))_(4)]^(2+)`,
`[Fe(C_(2)O_(4))]^(3-), "" [Co(en)_(3)]^(3+)`,
`[Fe(CN)_(6)]^(3-) or [Fe(CN)_(6)]^(4-)`,
`[PtCl_(4)]^(2-), "" [Ni(CO)_(4)]`,
`[CU(CN)_(4)]^(3-), "" [Co(NH_(3))_(6)]^(2+)`


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