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Question

Among the following maximum covalent character is shown by the compound

A
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B
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C
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D
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Solution

The correct option is C

The proportion of covalent character in ionic bond is decided by polarisability of the metal cation as well as

the electronegativity of both the elements involved in bonding. Polarisability is also decided by the density

of +ve charge on the metal cation. AlCl3 shows maximum covalent character. This is because Al cation

has 3 unit +ve charge and shows strong tendency to distort the electron cloud

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