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ClF₃ and $$I{O_4}^ - $$

ICl₂^- and ICl₅

XeOF₂ and XeOF₄

IO₃^- and IO₂F₂^-

I₃^- > NH₃ > PF₃ > BF₃

I₃^- > BF₃ > NH₃ > PF₃

BF₃ > I₃^- > PF₃ > NH₃

BF₃ > NH₃ > PF₃ > I₃^-

$$\eqalign{ & (\mathrm{I})\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,(\mathrm{II}) \cr & < 2\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, > 2 \cr} $$

$$\eqalign{ & (\mathrm{I})\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,(\mathrm{II}) \cr & > 2\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, < 2 \cr} $$

$$\eqalign{ & (\mathrm{I})\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,(\mathrm{II}) \cr & > 2\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, > 2 \cr} $$

$$\eqalign{ & (\mathrm{I})\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,(\mathrm{II}) \cr & < 2\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, < 2 \cr} $$