Fajan Rule || Pratul Singhal Sir || Allen Kota

Here's a brief overview of Fajan's Rule in chemistry:
Small Cation/Large Anion: When a small, highly charged cation approaches a large, highly charged anion, polarization is favored. This occurs because the small cation can distort the electron cloud of the large anion more effectively due to its size and charge density.
High Charge: Higher the charge on the cation, greater the polarization tendency. Similarly, higher charge density in the anion also favors polarization.
Polarizability: Polarizability refers to the ease with which the electron cloud of an ion can be distorted by an approaching ion. Larger ions with more diffuse electron clouds are more easily polarized.
Ionic Character: Compounds with greater polarization tend to have higher ionic character rather than covalent character.
Fajan's Rule is particularly relevant in predicting the behavior of ionic compounds, especially those involving transition metals or metalloids. It helps in understanding the extent of covalent character in ionic bonds, which has implications in various chemical reactions and properties of compounds.

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