JEE Main 2026 Chemistry question
Identify the correct statements from the following: A. [Fe(C₂O₄)₃]³⁻ is the most stable complex among [Fe(OH)₆]³⁻, [Fe(C₂O₄)₃]³⁻ and [Fe(SCN)₆]³⁻. B. The stability of [Cu(NH₃)₄]²⁺ is greater than that of [Cu(en)₂]²⁺. C. The hybridization of Fe in K₄[Fe(CN)₆] is d²sp³. D. [Fe(NO₂)₃Cl₃]³⁻ exhibits linkage isomerism. E. NO₂⁻ and SCN⁻ ligands are NOT ambidentate ligands.
Answer: (C)
Solution
A is true (chelate effect favours the oxalate complex). B is false (the chelate effect makes the ethylenediamine complex more stable, not less). C is true (CN⁻ is
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