By: Mr. Wood

Atomic Number: 62

Protons: 62

Electrons: 62

Neutrons: 88

Average Atomic Mass: 150.4 amu

Isotopes: Sm-144, Sm-145, Sm-146, Sm-147, Sm-148, Sm-149, Sm-150, Sm-151, Sm-152, Sm-153, Sm-154, Sm-155, Sm-156

Discovery: Samarium was isolated by Paul Emile Lecoq de Boisbaudran in France in 1879.

Name: Lecoq de Boisbaudran isolated Samarium from a mineral called "samarskite," named in honor of a Russian mine official, Colonel Samarski. The name of the element comes from the name of the mineral.

Uses: Samarium is used in carbon-arc lighting for the movie industry, in headphones magnets, and lasers.

Interesting Facts: Samarium ignites in the air at 150 degrees Celsius. Its never found free in nature. Instead it will be found in certain rocks and minerals. It also used to date samples taken from the Moon. Samarium is also a neutron absorber, so it used in the nuclear power industry to prevent nuclear power plants from overheating.