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  4. Among LiCl, RbCl, BeCl2, MgCl2 the compounds which greater and least ionic character respectively are

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Q. Among $ LiCl, RbCl, BeCl_2, MgCl_2 $ the compounds which greater and least ionic character respectively are

AMUAMU 2016Chemical Bonding and Molecular Structure

Solution:

$RbCl$ and $BeCl_2$, have greatest and least ionic character respectively. This is because, larger the cation, more is the ionic character or smaller the cation, greater is the covalent character (Fajan rules).