Arrange the following in increasing order of covalent character:

(A) (B) (C) (D)

Question

Arrange the following in increasing order of covalent character:

(A)  (B)  (C)  (D)

Canvas Classes · Accepted Answer

Covalent character in calcium halides depends on the polarisability of the anion (Ca²⁺ is the same in all).

Step 1 — Polarisability of halide ions:
- Larger anion → more polarisable → more covalent character
-  <  <  <  (increasing size and polarisability)

Step 2 — Increasing covalent character:

Answer: Option (2) — A < B < C < D

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