Which of the following statements are correct?
I. Among halogens, radius ratio between iodine and fluorine is maximum.
II. Leaving F-F bond, all halogens have weaker X-X bond than X-X' bond in interhalogens.
III. Among interhalogen compounds, maximum number of atoms are present in iodine fluoride.
IV. Interhalogen compounds are more reactive than halogen compounds.
The correct option is

Answer

A, C, D

Explanation

(a) Among halogens , radius ration between iodine and fluorine and fluorine is maximum because iodine has maximum radius and fluorine has minimum radius.
(b) It can be correctly stated as in general interhalogen compounds are more reactive then halogen. This is because X__X' bond in interhalogen is weaker than X__X bond in halogens except F__F bond.
(c ) Among interhalogen compounds maximum number of atoms are present in iodine fluoride because radius ratio of iodine and fluorine has maximum value.
(d) Interhalogen compounds are more reactive than halogen due to weaker X__X bond as compared to X__X of halogen compounds.