Question

Elements that show both positive and negative oxidation state

Answer 1

Explanation:

All the other halogens-chlorine, bromine and iodine- exhibit positive oxidation states upto +7, apart from the most stable negative state of -1. But fluorine is more electronegative than any other element in the periodic table and so it cannot be assigned a positive oxidation number in its compounds.

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Answer 2

Answer:

Explanatin:-

The elements which are amphoteric in nature shows both positive and negative oxidation state and form positive and negative oxide.