Based on Fajan's rules, which of the following sequences correctly represent an increasing order of — Chemical Bonding Chemistry Question

💡 Solution & Explanation

Option B and C are correct because as the positive charge on the cation increases ($+1$ to $+4$ or $+1$ to $+3$), polarizing power increases, raising covalent character. Option D is correct because as anion size increases ($Cl^- < Br^- < I^-$), polarizability and thus covalent character increase. Option A is backwards.