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Iodine

Iodine is a chemical element; it has symbol I and atomic number 53. The heaviest of the stable halogens, it exists at standard conditions as a semi-lustrous, non-metallic solid that melts to form a deep violet liquid at 114 ??C (237 ??F), and boils to a violet gas at 184 ??C (363 ??F). The element was discovered by the French chemist Bernard Courtois in 1811 and was named two years later by Joseph Louis Gay-Lussac, after the Ancient Greek ??????????, meaning 'violet'. Iodine occurs in many oxidation states, including iodide (I???), iodate (IO???3), and the various periodate anions. As the heaviest essential mineral nutrient, iodine is required for...

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wikidata.org 0 views · 2024-12-26 22:06:24