Which of the following compounds is the least | vedclass

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(A) According to $Fajans'$ rule,the covalent character in an ionic bond increases with the increase in the polarizing power of the cation.Polarizing p

Vedclass · Accepted Answer

$AgCl$

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(A) According to $Fajans'$ rule,the covalent character in an ionic bond increases with the increase in the polarizing power of the cation.Polarizing power is higher for cations with smaller size,higher charge,and pseudo-noble gas configuration $(ns^2 np^6 nd^{10})$.$Ag^+$ has a pseudo-noble gas configuration $([Kr] 4d^{10})$,which makes it more polarizing than the alkali or alkaline earth metal cations like $K^+$,$Ba^{2+}$,or $Ca^{2+}$.Therefore,$AgCl$ has the highest covalent character and the least ionic character among the given options.

Which of the following compounds is the least ionic?

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