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Iodine


53

I

Iodine
126.90447
2
8
18
18
7

Source

Iodine is a chemical element with symbol I and atomic number 53. The name is from Greek ἰοίνη iode, meaning violet or purple, due to the color of iodine vapor. Iodine and its compounds are primarily used in nutrition, and industrially in the production of acetic acid and certain polymers.