Promethium

=»Promethium« = = By: ⇧Max⇧ =
 * Atomic Number: 61

Protons: 61

Electrons: 61

Neutrons: 61

Average Atomic Mass: 145.0

Isotopes: Pm-45, Pm-46, Pm-47

Discovery: The first discovery (published, that is) was by** **Luigi Rolla and** **Lorenzo Fernandes from Florence in the year 1926. They called it Florentium.**
 * Name: The name Promethium came from the Greek Titan called Prometheus.

Uses: Portable x-ray sources. Beta radiation for thickness gauges. In nuclear batteries in which cells convert beta emissions into electricity.

Interesting Facts: The only exclusively radioactive element other than technetium.**

media type="youtube" key="px52fxITTrw" height="412" width="509" align="center"


 * Sources**
 * Photo: http://www.periodictable.com/Items/061.1/index.html
 * Video: http://www.youtube.com/watch?v=px52fxITTrw&feature=player_embedded
 * http://en.wikipedia.org/wiki/Promethium
 * http://www.periodictable.com/Elements/061/index.html
 * http://www.periodicvideos.com/#
 * http://periodic.lanl.gov/elements/61.html