Name: Iodine
Symbol: I
Atomic #: 53
Atomic Mass: 126.90447
Family: Halogens
Group: 7A
Period: 7
Uses: Medicinal, inks/dyes ,photography and
table salt.
Protons: 53
Neutrons: 74
Electrons: 53
Was isolated by Bernard Courtois in 1811 by pouring sulfuric acid on seaweed ashes which created a purple vapor which then condensed into dark crystals.
Iodine's electron configuration
Fun Facts
At room temperature iodine is a bluish-black crystal.
Iodine is based on the greek word for purple.
If heated up to its melting point iodine turns directly into a gas and then it solidifies into crystals again.
Iodine Crystals
A Bottle Of Iodine
For Information on the many other Elements visit
Health Hazards
Iodine is important in the human body in trace amounts but in large amounts it's highly toxic.