Which of the following correctly represents the order of stability of oxides,   ${\mathrm{X}}_2\mathrm{O};(\mathrm{X}=\mathrm{halogen})?$

The stability of oxides of halogens decreases in the order I>Cl>Br. The stability of oxides of iodine is greater than those of chlorine and bromine. Iodine oxygen bond is stable due to greater polarity of the bond while the stability of the chlorine oxygen bond is due to multiple bond formation involving d-orbitals of the chlorine atom. Bromine being in between, lacks both these characteristics. Hence, the stability of oxides of halogens decreases as mentioned above.