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From the stability constant (hypothetical values), given below, predict which is the most stable complex ?

Answer»

`Cu^(2)+4NH_(3) to [Cu(NH_(3))_(4)]^(2+), K=4.5xx10^(11)`
`Cu^(2)+4CN^(-) to [Cu(CN)_(4)]^(2-), K=2.0xx10^(27)`
`Cu^(2)+2en to [Cu(en)_(2)]^(2+), K=3.0xx10^(15)`
`Cu^(2)+4H_(2)O to [Cu(H_(2)O)_(4)]^(2+), K=9.5xx10^(8)`

Answer :B


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