Promethium

PROMETHIUM.
 * Promethium's symbol is Pm and chemical number is 61.
 * It’s in a solid, metallic state and colour is silvery-white. When it is in the dark it glows green-blue and the salts are a pinkish-red colour.
 * Its melting state is 1142 Degree Celsius.
 * It is the only known radioactive rare earth material.

History and uses of Promethium

Promethium was named after the Greek god Prometheus who gave fire to humans. The Czech chemist Bohuslav Brauner predicted the existence of promethium in 1902. Several groups of people claimed to have produced the element, but they could not verify their discoveries because of the difficulty of separating promethium from other elements, also because it is so microscopic that no promethium on earth has been found that is able to be seen with the naked eye. Today, promethium is used to make nuclear batteries and portable x-ray machines. It also can be used to power space satellites and create lasers. It's also used in luminous paint. __//Promethium is a radioactive material that glows green-blue when in the dark.//__ Protons, Neutrons, Electrons and other science-y things. With no charge; most commonly found. Protons: 61 Neutrons: 84. Electrons: 61 Crystal Structure: Hexagonal

Bibliography. author not identified, 2012, Promethium Element Facts/ Chemistry, Chemicool, accessed 20th of June 2012, http://www.chemicool.com/elements/promethium.html.

Steve Gagnon, date not identified, The Element Promethium, Jefferson Lab, accessed 20th of June 2012, http://education.jlab.org/itselemental/ele061.html.

Kenneth L Barbalace 1995, Element Promethium-Pm, Environmental Chemistry.com, Accessed 22nd of June 2012, http://environmentalchemistry.com/yogi/periodic.Pm.html.