Question

Which one of the following is the true covalent oxide of iodine?

• A. $I _{2} O _{4}$
• B. $I _{2} O _{5}$
• C. $I _{2} O _{7}$
• D. $I _{2} O _{9}$

Answer 1

The Correct Option is A

In general, higher the oxidation state, more is the covalent character of the oxide. $I _{2} O _{7}$ and $I _{2} O _{9}$ do not exist. $I _{2} O _{4}$ is ionic in nature. It is infact iodyl iodate $[ IO ]^{+}\left[ IO _{3}\right]^{-}$. The only covalent oxide of iodine is $I _{2} O _{5}$.