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  • Which among the following represents the correct order of the polarizing power of the cationic species<img alt="\mathrm{ K^{+}, Ca^{2+}, Mg^{2+}, Be^{2+}}" src="/latex-image/?%5Cmathrm%7B%20K%5E%7B

Which among the following represents the correct order of the polarizing power of the cationic species\mathrm{ K^{+}, Ca^{2+}, Mg^{2+}, Be^{2+}}?

Option: 1

\mathrm{Mg^{2+},Be^{2+},K^{+},Ca^{2+}}
 


Option: 2

\mathrm{Be^{2+}, K^{+}, Ca^{2+}, Mg^{2+}}


 


Option: 3

\mathrm{K^{+},Ca^{2+},Mg^{2+}, Be^{2+}}


Option: 4

\mathrm{Ca^{2+}, Mg^{2+}, Be^{2+}, K^{+}}


Answers (1)

best_answer

The charge/size ratio of a cation determines its polarizing power. More the charge to size ratio, higher is the polarizing power.
In the give ions, Berrylium ion is smallest in size. Whereas Potassium ion has least
charge.
Hence option 3 is correct.

Posted by

Riya

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