What is Fajan's rule?
Answers
Answer:
By Fajans' Rules, compounds are more likely to be ionic if: there is a small positive charge on the cation, the cation is large, and the anion is small
=========>FAJAN'S RULES :
° FAJAN'S rules are used to predict whether a chemical bond will be a covalent or Ionic., and depend on charge of cation and the relative sizes of cation and anion.
× FOR MORE IONIC CHARACTER :
° Low positive charge.
° Large Cation.
° Small Anion.
× FOR MORE COVALENT CHARACTER :
° High positive charge.
° Small Cation.
° Large Anion.
× POLARIZATION CAN BE INCREASED BY :
° High charge and small size of cation.
° High charge of and large size of anion.
° An incomplete valence shell electronic configuration.
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