I
Iodine

Iodine is a non-metallic element from the periodic table. It is a dark-purple solid at room temperature, and it has a sharp, pungent odor. Iodine is used in the production of medical tablets and in photography. It is also used to test for the presence of starch.

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Atomic number53
GroupVIIA
Period5
Mass126.90447
Latin nameIodum
Electron configuration[Cd]5p5
Oxidation state-1, 0, 1, 3, 4, 5, 6, 7