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#95 Americium - rarity ZERO-KELVIN
1st ionization energy 5.993 eV 0.85%
appearance Silvery-white metallic appearance 2.54%
atomic mass 243 u 0.85%
atomic number 95 0.85%
atomic radius 244 picometers (van der Waals radius) 1.69%
boiling point 2880 K or 2607 °C or 4725 °F 0.85%
cas number 7440-35-9 0.85%
cas number of (cl2) - 99.15%
category Inner transition metals 23.73%
crystal structure Double hexagonal close packed 5.08%
density 13.67 g/cm3 0.85%
electronegativity 1.3 (Pauling scale) 9.32%
electronic configuration [Rn] 5f7 7s2 0.85%
electrons 95 0.85%
electrons arrangement 2, 8, 18, 32, 25, 8, 2 0.85%
main isotopes 241Am and 243Am 0.85%
melting point 1449 K or 1176 °C or 2149 °F 0.85%
neutrons 148 1.69%
position Group: actinides, Period: 7, Block: f 10.17%
rarity ZERO-KELVIN 33.33%
state Solid 72.88%
sublimation point - 99.15%
symbol Am 0.85%
valence electrons - 61.02%
who discovered Glenn T. Seaborg, Albert Ghiorso, Leon O. Morgan, Ralph A. James (in 1944) 0.85%

Total Rarity Score: 1743.8

Rarity: #88/354

Americium

Collection: Bohring Atoms