Which of the following is the correct increas | vedclass

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Question

(A) According to Fajan's rule,the covalent character of an ionic compound increases as the size of the cation decreases.As we move down the group $2$

Vedclass · Accepted Answer

$BeCl_2 < MgCl_2 < CaCl_2 < BaCl_2$

Vedclass · Answer

(A) According to Fajan's rule,the covalent character of an ionic compound increases as the size of the cation decreases.As we move down the group $2$ ($Be$ to $Ba$),the size of the cation increases.Therefore,the polarizing power of the cation decreases,which leads to a decrease in covalent character and an increase in ionic character.The order of size of cations is $Be^{2+} Thus,the increasing order of ionic character is $BeCl_2 < MgCl_2 < CaCl_2 < BaCl_2$.

Which of the following is the correct increasing order of ionic character?

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