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Which is less reactive, iodine or oxygen?

User Omikad
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17 votes
Iodine

Iodine is a grayish black solid and is the least chemically active of the four; however, among the nonmetals only oxygen is more reactive than iodine. Pure halogens exist as diatomic molecules, e.g., Cl2; they form interhalogen compounds, i.e., compounds between two halogens.
User Louise Fallon
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