Iodine

From GAWDAwiki

Iodine is a lustrous, grayish-black, corrosive, poisonous halogen element having radioactive isotopes, especially I 131. Iodine compounds are used as germicides, antiseptics and dyes.^[1]

Properties

• Atomic number: 53
• Atomic Weight: 126.90447
• Melting point: 386.85 K (113.7°C or 236.7°F)
• Boiling point: 457.55 K (184.4°C or 364.0°F)
• Density: 4.93 grams per cubic centimeter
• Phase at room temperature: Solid
• Element classification: Non-metal
• Period number: 5
• Group number: 17
• Group name: Halogen^[2]

References

1. http://www.answers.com/topic/iodine
2. http://education.jlab.org/itselemental/ele053.html