NEET2020Chemistry-Coordination Compounds
NEET 2020 Chemistry Spectrochemical Series MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?
A
F⁻ < SCN⁻ < C₂O₄²⁻ < CN⁻
B
CN⁻ < C₂O₄²⁻ < SCN⁻ < F⁻
C
SCN⁻ < F⁻ < C₂O₄²⁻ < CN⁻
D
SCN⁻ < F⁻ < CN⁻ < C₂O₄²⁻
Correct Answer
Option C
Detailed Explanation
According to the spectrochemical series, the correct order of increasing field strength among the given ligands is: SCN⁻ < F⁻ < C₂O₄²⁻ < CN⁻. SCN⁻ is a weaker field ligand than F⁻, oxalate (C₂O₄²⁻) is moderate, and CN⁻ is one of the strongest field ligands. The correct answer is C.
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