Which of the following has the highest polari | vedclass

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Question

(D) According to $Fajans'$ rule,the polarising power of a cation is directly proportional to its charge density. Polarising power $\propto \frac{	ext

Vedclass · Accepted Answer

Small,highly $+ve$ ion

Vedclass · Answer

(D) According to $Fajans'$ rule,the polarising power of a cation is directly proportional to its charge density. Polarising power $\propto \frac{	ext{charge}}{	ext{size}}$. $A$ small cation with a high positive charge has the highest charge density and thus the highest polarising power. Therefore,a small,highly $+ve$ ion has the highest polarising power.

Which of the following has the highest polarising power?

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