Iodine
DIATOMIC NONMETAL
Phase: Solid
Discovered: Bernard Courtois
Block: P
Summary
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.
Source: WikipediaPhysical Properties
Atomic Mass 126.904473 u
Density 4.933 g/cm³
Melting Point 386.85 K
Boiling Point 457.4 K