1.

The correct order of the increasing ionic character is

Answer»

`BeCl_(2)ltMgCl_(2)ltCaCl_(2)ltBaCl_(2)`
`BeCl_(2)ltMgCl_(2)ltBaCl_(2)gtCaCl_(2)`
`BeCl_(2)ltBaCl_(2)ltMgCl_(2)ltCaCl_(2)`
`BaCl_(2)ltCaCl_(2)ltMgCl_(2)ltBeCl_(2)`

SOLUTION :Alkali METALS have the configuration `(n-1)s^(2)p^(6),NS^(1)`.


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