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