when the size of cation decreases why the covalent character increases?

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Q. Assertion :Increasing order of covalent character among given compounds is

H g {C l}_{2} < C d {C l}_{2} < Z n {C l}_{2}

. Reason: Order of size of cations is

{Z n}^{2 +} < {C d}^{2 +} < {H g}^{2 +}

Q. Why does lattice energy decreases with increase in anionic and cationic size?

Q. By Fajan's rule, covalent character increases with increase in size of the anion. Identify the correct order of melting point of calcium halides.

Q. ______ cation and ______ anion favour least covalent character.

As we move across the period, the size of the atom decreases which means the attraction between the nuclei and the electrons increases so the metallic character decreases. And Hence, the non-metallic character increases.

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