Among the following,the maximum covalent char | vedclass

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(C) According to Fajan's rule,the covalent character of an ionic bond increases with an increase in the polarizing power of the cation.Polarizing powe

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$AlCl_3$

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(C) According to Fajan's rule,the covalent character of an ionic bond increases with an increase in the polarizing power of the cation.Polarizing power is directly proportional to the charge density of the cation,which depends on the charge and size of the cation.Comparing the charges on the cations: $Fe^{2+}$,$Sn^{2+}$,$Al^{3+}$,and $Mg^{2+}$.$Al^{3+}$ has the highest positive charge $(+3)$ among the given cations.Therefore,$AlCl_3$ exhibits the maximum covalent character.

Among the following,the maximum covalent character is shown by the compound:

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