Choose the correct option regarding the following complex compound which follwos (F) and does not follow (NF) the Sidgwick EAN rule:
(I) `[Ph_(3)P)_(2)PdCl_(2)PdCl_(2)]`
(II) `[NiBrCl(en)]`
(III) `Na_(4)[Fe(CN)_(5)NOS]`
(IV) `Cr(CO)_(3)(NO)_(2)`

Options

A. (I)-NF,(II)-NF,(III)-NF,(IV)-NF
B. (I)-F,(II)-F,(III)-NF,(IV)-F
C. (I)-NF,(II)-NF,(III)-F,(IV)-F
D. (I)-NF,(II)-NF,(III)-F,(IV)-NF

Answer

C

Explanation

(I) `[(Ph_(3)P)_(2)PdCl_(2)PdCl_(2)],EAN` of Pd=46-2+4`xx2=52`
(II) `[NiBrCl(en)]:` EAN of Ni=28-2+8=34
(III) `[Na_(3)[Fe(CN)_(5)NOS],` EAN of Fe=26-2+`5xx2+2=36`[Kr]
(IV) `Cr(CO)_(3)(NO)_(2),`EAN of ltBrgt `Cr=24-0+3xx2+3xx2=36[Kr]`.