Promethium


 * Element Name:** Promethium


 * Element Symbol**: Pm


 * Atomic Mass:** 145[[image:Promethium_Pablo.png width="216" height="288" align="right"]]


 * Atomic Number**: 61


 * Protons:** 61


 * Electrons**: 61


 * Discovery:** Promethium was discovered in 1945 in the Oak Ridge National Lavatory


 * How It Was Named:** Promethium was named after the Greek Titan Prometheus


 * State Of Matter:** Solid


 * Melting Point:** 1,042°C


 * Boiling Point:** 3,000°C


 * Characteristics:** Pure Promethium is highly radioactive. It glows in the dark with a greenish or pale blue glow. Promethium tarnishes slow with air.


 * Uses of Element:** Promethium is used in a nuclear battery, and also as a beta radiation source for thickness gauges.


 * Interesting Facts:** Charles Coryell's wife told Charles, one of the people that found promethium, that obtaining promethium was like stealing fire from the gods just the Greek Titan Prometheus. Promethium is the only rare earth element that is radioactive.

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