1.

Sidgwick EAN rule says that complexcompoundhas the tendency to achieve the EAN of 36, 54 and 86 for first, second and third transition series elements. Which of the following complex follows sidgwick EAN rule ?

Answer»

`[Ag(S_(2)O_(3))_(2)]^(3-)` (when only S atom is the DONOR atom)
`[Cd(CN)_(4)]^(2-)`
`[Pt(en)_(2)]^(2+)`
`[Mo(sigma-C_(3)H_(5))Br(NH_(3))_(2)]^(0)`

Solution :(a)`[Ag(S_(2)O_(3))_(2)]^(3-) implies 47-1+4=50`
(b) 48-2+8=54
(C ) 78-2+8=84
(d) 42-2+8=48


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