Choose the incorrect order regarding ionic ch | vedclass

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Question

(C) According to Fajans' Rules,ionic character increases as the polarizing power of the cation decreases. Polarizing power depends on the charge and s

Vedclass · Accepted Answer

$ZnCl_2 > SnCl_2 > CaCl_2$

Vedclass · Answer

(C) According to Fajans' Rules,ionic character increases as the polarizing power of the cation decreases. Polarizing power depends on the charge and size of the cation. Cations with a noble gas configuration ($ns^2 np^6$,$8e^-$) have lower polarizing power and thus form more ionic bonds compared to those with pseudo-noble gas configurations $(18e^-)$. In option $C$,$Ca^{2+}$ has a noble gas configuration,while $Zn^{2+}$ and $Sn^{2+}$ have pseudo-noble gas configurations. Therefore,the correct order of ionic character is $CaCl_2 > SnCl_2 > ZnCl_2$. Thus,the order $ZnCl_2 > SnCl_2 > CaCl_2$ is incorrect.

Choose the incorrect order regarding ionic character:

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The number of the following factors which affect the percent covalent character of the ionic bond is $............$.
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