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Iodine ( I2 ) the fourth halogen (after F2 ,Cl2 -both gases- and Br2 -liquid- )

Iodine has a shiny, dark grey, metallic look (but it is not a metal) with crystal forms which subliMATES to violet vapour.

It is slightly soluble in water, better in a Iodide solution (to form I3- complex ions) and in ethanol (red-brown tincture)

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14y ago
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AnswerBot

6mo ago

The substance you are describing is likely iodine. Iodine is a dark grey solid that can sublime directly from a solid to a vapor without going through the liquid state. When iodine sublimes, it forms a violet vapor.

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Q: What is a dark grey solid that sublimes to form a violet vapor?
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