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According to Fajans rule, the covalent b...

According to Fajans rule, the covalent bond is favoured by :

A

Large cation and small anion

B

Large cation and large anion

C

Small cation and small anion

D

Small cation and large anion

Text Solution

Verified by Experts

The correct Answer is:
D
Covalent characters will be more in an electrovalent compound, if cation is small and anion is large. This is because of the greater polarization of electron clouds of anion by the small cation. For example, LICl, `BeCl_2` etc. have high covalent nature.
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