Element: Americium (Am)

Element (Atom) NameAmericium
Physical state at room temperatureSolid
Element ClassificationMetal
Group NameActinide
Period Number (Periodic table) 7
Group number (Periodic table)None
Atomic number95
Atomic weight243 (Ref: Jlab-ele095, Lanl-95)
Atomic Radius244 pm (Van der Waals) (Ref: Lanl-95)
Density13.69 g/cm3 (Ref: Jlab-ele095)
Melting point1176°C (Ref: Jlab-ele095, Lanl-95)
Boiling point2011°C (Ref: Jlab-ele095)
2607 °C (Ref: Lanl-95)
Electron shell configuration1s2 
2s2 2p6 
3s2 3p6 3d10 
4s2 4p6 4d10 4f14 
5s2 5p6 5d10 5f7
6s2 6p6
Oxidation States+6, +5, +4, +3 (Ref: Jlab-ele095)
8, 7, 6, 5, 4, 3, 2 (Ref: Lanl-95)
Ionization Energy5.993 eV (Ref: Jlab-ele095)
5.97381 eV (Ref: Nist-95)
Number of Stable Isotopes0
InChIInChI=1S/Am (Ref: Pubchem-95)
RemarksRadioactive, Artificially Produced


  • Jlab-ele095: https://education.jlab.org/itselemental/ele095.html
  • Lanl-95: https://periodic.lanl.gov/95.shtml
  • ciaaw-atomic-weights: https://www.ciaaw.org/atomic-weights.htm
  • Nist-95: https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=95
  • Pubchem-95: https://pubchem.ncbi.nlm.nih.gov/element/95
  • science.co.il: https://www.science.co.il/elements/

Was this post helpful?

Author: admin

2 thoughts on “Element: Americium (Am)

Leave a Reply

Your email address will not be published. Required fields are marked *