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Iodine

A dark violet nonmetallic chemical element belonging to the halogen family and consisting of grayish-black crystals that volatilize into a violet-colored vapor.

The element is insoluble in water but soluble in ethanol and other organic solvents 3. Symbol I; at. wt 126.9044; at no.53 sp.gr.4.93; melt.pt.113.7 °C

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