Q.

Choose the correct option regarding the following complex compound which follows (F) and does not follow (NF) the Sidgwick EAN rule : (I) Ph3P2PdCl2PdCl2                       (II) [NiBrCl(en)]  (III) Na4Fe(CN)5NOS                            (IV) Cr(CO)3(NO)2

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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 is C.

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Detailed Solution

(I) Ph3P2PdCl2PdCl2; EAN of Pd=46−2+4×2=52  (II) [NiBrCl(en)]: EAN of Ni=28−2+8=34  (III) Na4Fe(CN)5NOS;   EAN of Fe=26−2+5×2+2=36[Kr]  (IV) Cr(CO)3(NO)2; EAN of  Cr=24−0+3×2+3×2=36[Kr]
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Choose the correct option regarding the following complex compound which follows (F) and does not follow (NF) the Sidgwick EAN rule : (I) Ph3P2PdCl2PdCl2                       (II) [NiBrCl(en)]  (III) Na4Fe(CN)5NOS                            (IV) Cr(CO)3(NO)2