Home 94 Pu Plutonium back to the periodic table
 
Atomic number   94
Symbol   Pu
Atomic weight   244.0642
Density [g/cm3]   19.74
Melting point [°C]   641
Boiling point [°C]   3230
1st Ionization energy [eV]   5.8
Electronic configuration   [Rn] 5f6 7s2
Oxidation number (most stable)   6, 5, 4, 3
Atomic radius [pm]   151 (a)
Ionic radius [pm]   80 (4+)
Abundance in crustal rocks [ppm]   minor traces
Origin of the name   named after the planet Pluto
Discovery   1940 by the American Glenn T. Seaborg, Segré, Kennedy and Wahl
Uses   as source of energy in reactors.
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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