Iodine: historical information

Iodine was discovered by Bernard Courtois at 1811 in France. Origin of name: from the Greek word "iodes" meaning "violet".

Iodine was discovered by Barnard Courtois in 1811. He isolated iodine from treating seaweed ash with sulphuric acid (H2SO4) while recovering sodium and potassium compounds.

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iodine atomic number