what is mean by iodine
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The chemical element of atomic number 53, a non - metalic element forming black crystals and a violet vapour.
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Answer:Iodine is a chemical element with the symbol I and atomic number 53. The heaviest of the stable halogens, it exists as a lustrous, purple-black non-metallic solid at standard conditions that melts to form a deep violet liquid at 114 degrees Celsius, and boils to a violet gas at 184 degrees Celsius.
Explanation:Iodine is a nonmetallic chemical element and the heaviest nonradioactive halogen. It is a very nearly black crystalline solid that can turn to a deep violet, irritating vapor. ... Dietary iodine is essential for thyroid gland function, so table salt usually has potassium iodide added to prevent iodine deficiency.
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