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Periodic Table
I
53diatomic nonmetalGenerated with AI1 min read

Iodine

SymbolI
Atomic Mass126.904473

Iodine is a chemical element with symbol I and atomic number 53. The name is from Greek ἰοειδής ioeidēs, meaning violet or purple, due to the color of iodine vapor. Iodine and its compounds are primarily used in nutrition, and industrially in the production of acetic acid and certain polymers.

Properties

  • Phase: Solid
  • Density: 4.933 g/cm³
  • Melting Point: 386.85 K
  • Boiling Point: 457.4 K

Uses