Home 95 Am Americium back to the periodic table
 
Atomic number   95
Symbol   Am
Atomic weight   243.0614
Density [g/cm3]   13.67
Melting point [°C]   994
Boiling point [°C]   2600
1st Ionization energy [eV]   6.0
Electronic configuration   [Rn] 5f7 7s2
Oxidation number (most stable)   6, 5, 4, 3
Atomic radius [pm]   184
Ionic radius [pm]   100 (3+)
Abundance in crustal rocks [ppm]   0
Origin of the name   named after America, because it shows the same electronic configuration as europium
Discovery   1944 by the Americans Seaborg, Ghiorso, James and Morgan
Uses   no technical significance.
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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