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94 Pu Plutonium

Actinoid, mass: 244 u, no stable isotopes, abundance rank (earth/space): 90/?

Photo: U.S. Department of Energy, 1945, released as public domain.

Plutonium

Plutonium, a silvery, very heavy and hard metal, is perhaps the most dangerous of all elements and the one that, relative to its amount, did the worst damages to humanity and environment. It was in the bomb of Nagasaki and, together with uranium, involved in the Chernobyl disaster. In multiple nuclear tests it devasteted huge areas. It is still used in nuclear power plants, where it produces waste that cannot be depolluted, can be made weapons-grade and is a constant threat for the entire world. In nature, plutonium only occurs in very small amounts, all that is in use is artificially made from uranium. Apart from its radioactivity, it is very toxic. As fissile material, commonly 239Pu is used. When hit by a neutron, this decays and releases more neutrons and radioactive waste. If not fissioned, most plutonium decays to uranium.

Page last changed on February 21. 2011

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