Barium

Atomic Number:
56
Atomic Symbol: Ba
Atomic Mass: 137.327

Barium

Date of Discovery
: 1808
Discovered By: Sir Humphry Davy

Where It Can Be Found

Barium is never found in nature since it reacts with oxygen in the air and with water, forming Barium Oxide and Hydroxide. It is most commonly found as Barium sulfate and witherite. It can also be produced through the electrolysis of barium chloride.

How It Is Used
Barium is best known for the use of one of its compounds, barium sulfate, as a medical cocktail for X-rays and examinations. It is also used in paint and glass making. Barium carbonate has been used as a rat poison. Barium nitrate gives fireworks a green color.

Physical Description
Silvery white, soft, solid, metallic, It oxidizes quickly.
Density: 3.51 g/cm-3
Melting Point: 1000 K (727° C)
Boiling Point: 2170 K (1897° C)

Two Isotopes of Barium
1. Ba-134 is used to perform experiments in the field of nuclear physics.
2. Ba-136 has been used to study photon scattering phenomena.





Sources: http://www.rsc.org/chemsoc/visualelements/pages/data/barium_data.html
http://www.carondelet.pvt.k12.ca.us/Family/Science/AEM/Barium4.htm
www.google.com Encyclopedia