Choose the correct option regarding the following complex compound which follows (F) and does not follow (NF) the Sidgwick EAN rule :
(I) [(Ph3P)2PdCl2PdCl2]
(II) [NiBrCl(en)]
(III) Na4[Fe(CN

Question

Choose the correct option regarding the following complex compound which follows (F) and does not follow (NF) the Sidgwick EAN rule :
(I) [(Ph3P)2PdCl2PdCl2]
(II) [NiBrCl(en)]
(III) Na4[Fe(CN)5NOS]
(IV) Cr(CO)3(NO)2

Prashant Kotian · Accepted Answer

Correct answer: C. Step 1: Write down the Effective Atomic Number (EAN) formula: EAN = Z - (Oxidation State) + 2 * (Number of monodentate ligands), where Z is the atomic number of the metal. Step 2: Substitute the given values (EAN = 36, Z = 26, and oxidation state of M^2+ = +2): 36 = 26 - 2 + 2 * n, where n is the number of ligands. Step 3: Solve for n: 36 = 24 + 2n => 2n = 12 => n = 6. Thus, there are 6 monodentate ligands, corresponding to option (c).

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