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+ Inorganic chemistry
+ Science
+ Chemistry
+ Oxides
+ Iodine
+ Organic chemistry
+ Stability
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Masih Taher

Why is iodine oxide the most stable?

Charlie Perrin  Follow

There are five oxides of iodine. Of theses I2O5 (or O(IO2)2) is the most stable. It is a white crystalline solid, which decomposes only beyond 300 degrees Celsius, and dissolves in water (187 g/100 mL) without decomposition. It is stable due to its bonding nature. Iodine has +5 oxidation state in I2O5. Its structure is,

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Brett Bergan  Follow

The stability of oxides of iodine is greater than those of chlorine while bromine oxides are the least stable. 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.

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