Question

Polarisation of the electron cloud of cation is less than anion because:

• A. p/e ratio is more than one for anion
• B. p/e ratio is less than one for cation
• C. p/e ratio is more than one for cation by which electrons are relatively loosely held compared to anion
• D. p/e ration is more than one for cation while less than one for anion by which electron cloud is relatively loosely held for anion

Answer 1

Answer: (D)

p/e ration is more than one for cation while less than one for anion by which electron cloud is relatively loosely held for anion

If the anion is large and has a relatively low charge, then it is said to have a large polarisability. So,in effect
1) if the cation has a high charge density (small and high charge)
2) if the anion is large, polarization will be high.
So p/e ration is more than one for cation while less than one for anion by which electron cloud is relatively loosely held for anion.