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Which of the following has the highest c...

Which of the following has the highest covalent character?

A

`BeCl_2`

B

`MgCl_2`

C

`CaCl_2`

D

`BaCl_2`

Text Solution

Verified by Experts

The correct Answer is:
A
`Be^(2+)` ion has the maximum charge density (charge/surface area) on account of its smallest size. Thus, it has maximum polarizing power leading to the highest covalent character. The correct order of decreasing covalent character (or increasing ionic character) is
`BeCl_2 gt MgCl_2 lt CaCl_2 lt BaCl_2`
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