Among `LiCl, RbCl, BeCl_2, MgCl_2`, the compounds with greatest and least ionic character respectively are

Options

A. `LiCI, RbCI`
B. `RbCI, BeCI_(2)`
C. `RbCI, MgCI_(2)`
D. `MgCI_(2), BeCI_(2)`

Answer

B

Explanation

Out of `Li^(o+)` , `Rb^(o+)` , `Be^(2+)` and `Mg^(2+)` , `Rb^(o+)` has the least charge/radius ratio and these polarize `CI^(Θ)` ion to least extent hence maximum ionic `Be^(2+)` having highest charge/radius ratio forms maximum covalent or least ionic compound with `CI^(Θ)`