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Home Questions 2FUTDGPKS4
Target Exam

CUET

Subject

Chemistry

Chapter

Inorganic: Coordination Compounds

Question:

Which of the following is the most stable species?

Options:

[Ni(NH3)6]2+

[Fe(CN)6]3-

[Fe(C2O4)3]3-

[Ni(H2O)6]2+

Correct Answer:

[Fe(C2O4)3]3-

Explanation:

[Fe(C2O4)3]3- is the most stable among the given complexes as it contains three bidentate ligands (C2O42-: oxalato) forming rings giving chelate effect.

Other complexes contain monodentate ligands such as NH3, CN–, H2O. Monodentate ligands does not provide chelate effect.

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