S Block Elements Question 31

Question: Which one of the following is the true covalent oxide of iodine

[MP PET/PMT 1988]

Options:

A) $ I_2O_4 $

B) $ I_2O_5 $

C) $ I_2O_7 $

D) $ I_2O_9 $

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Answer:

Correct Answer: B

Solution:

In general, higher the oxidation state, more is the covalent character of the oxide. $ I_2O_7 $ & $ I_2O_5 $ do not exist. $ I_2O_4 $ is ionic in nature. It is infact iodyl iodate $ {{[IO]}^{+}}{{[IO_3]}^{-}} $ . The only covalent oxide is $ I_2O_5 $ .