Which order is correct in spectrochemical series of ligands:
Cl-<F-<H2O<[C2O4]2-<CN-
Cl-<F-<CN-<H2O<[C2O4]2-
F-<Cl-<CN-<H2O<[C2O4]2-
F-<Cl-<H2O<CN-<[C2O4]2-
Cl-<F-< [C2O4]2-<H2O<CN-
The Correct Option is A
Solution and Explanation
Spectrochemical Series Analysis:
Correct weak-to-strong field order: \[ \text{Cl}^- < \text{F}^- < \text{H}_2\text{O} < \text{C}_2\text{O}_4^{2-} < \text{CN}^- \]
Key features:
Halides are weak field (Cl^- weaker than F^-)
H2O is intermediate field
CN^- is strongest field ligand
Thus, the correct option is (A): \(Cl^- < F^- < H_2O < [C_2 O_4]^{2-} < CN^-\).
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Such a group of atoms is called a molecule. Obviously, there must be some force that holds these constituent atoms together in the molecules. The attractive force which holds various constituents (atoms, ions, etc.) together in different chemical species is called a chemical bond.
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