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CGP EDU Academic Team
Published on: August 13, 2026
Arrange the following in the increasing order of their covalent character.
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NaF < Na 2 O < Na 3 N NaCl < MgCl 2 < AlCl 3 < SiCl 4 < PCl 5
According to Fajan's rule as size of anion increases and charge on anion increases polarisability of anions increases and thus covalent character increases. Hence they follow the following order.
NaF < Na 2 O < Na 3 N NaCl < MgCl 2 < AlCl 3 < SiCl 4 < PCl 5
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