1.

According to Fajan's rules, ionic bonds are formed when

Answer»

cations have low positive CHARGE, large size and anions have large size
catios have low positive charge and SMALL size
cations have high positive charge and lareg size
cations have low positive charge, large size and anions have small size

Solution :For greater ionic character of the bond, the cation should have low polarising POWER and the ANION should have small polarisability.


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