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JEE Main2019Chemistry
Q.

The covalent alkaline earth metal halide

(X = Cl, Br, I) is

  1. A

    BeX2

  2. B

    SrX2

  3. C

    CaX2

  4. D

    MgX2

Solution

According to Fajan’s rule, graeter the polarising power of cation greater would be the covalent character.

Since Be2+ has maximum polarising power among given cation, therefore, BeX2 would be most covalent among given alkaline with metal halides.

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