Question: why pbcl2 is ionic and pbcl4 is covalent?
Answer: PbCl2 is ionic but PbCl4 is covalent why. The charge on Pb in PbCl2 is +2 and PbCl4 is +4. According to Fajan's rule, greater the charge on the cation, more is its ability to polarize the bonding electrons towards itself giving the compound a higher covalent character. ... Hence , PbCl2 is ionic.