JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
Identify the correct statements from the following
A. \([Fe(C_2O_4)_3]^{3-}\) is the most stable complex among \([Fe(OH)_6]^{3-}\), \([Fe(C_2O_4)_3]^{3-}\) and \([Fe(SCN)_6]^{3-}\)
B. The stability of \([Cu(NH_3)_4]^{2+}\) is greater than that of \([Cu(en)_2]^{2+}\)
C. The hybridization of Fe in \(K_4[Fe(CN)_6]\) is \(d^2sp^3\)
D. \([Fe(NO_2)_3Cl_3]^{3-}\) exhibits linkage isomerism
E. \(NO_2^-\) and \(SCN^-\) ligands are NOT ambidentate ligands
Choose the correct answer from the options given below :
- A A, B, C, D and E
- B B, C and D only
- C A, C and D only
- D A, C and E only
Answer & Solution
Correct Answer
(C) A, C and D only
Step-by-step Solution
Detailed explanation
Statement A is correct. The oxalate ion (\(C_2O_4^{2-}\)) is a bidentate ligand and forms chelate rings with the central metal ion. Due to the chelate effect, \([Fe(C_2O_4)_3]^{3-}\) is more stable than complexes formed by monodentate ligands like \([Fe(OH)_6]^{3-}\) and…
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