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Question

Chemistry Question on Group 17 Elements

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

A

I2O4I _{2} O _{4}

B

I2O5I _{2} O _{5}

C

I2O7I _{2} O _{7}

D

I2O9I _{2} O _{9}

Answer

I2O4I _{2} O _{4}

Explanation

Solution

In general, higher the oxidation state, more is the covalent character of the oxide. I2O7I _{2} O _{7} and I2O9I _{2} O _{9} do not exist. I2O4I _{2} O _{4} is ionic in nature. It is infact iodyl iodate [IO]+[IO3][ IO ]^{+}\left[ IO _{3}\right]^{-}. The only covalent oxide of iodine is I2O5I _{2} O _{5}.