Which of the following facts regarding Fajan's rules is not correct?

Which of the following facts regarding Fajan's rules is not correct?
  1. A small positive ion favours covalency
  2. A large negative ions favours covalency
  3. Large charge on either ion, or on both ions, favours covalency
  4. Covalency is favoured if the polarizing ion has a noble gas configuration

Solution

A noble gas configuration is the most effective at shielding the nuclear charge and has a poor polarizing effect.

Asked in: JEE-TOPICTESTS-CHEMISTRY

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