Subscription Info   Newsletter   Site Demo   Librarians   Help/FAQs   About   Contact Us   
Search Options

  Log In
< Back

Fermium  SEE PERIODIC TABLE
see article  SEE FULL ARTICLE

Atomic Number100
Atomic SymbolFm
Atomic Weight[257 amu]
GroupRare Earth (Actinide Series)
Melting Point1527 °C (2780.6 °F, 1800.15 °K)
First Ionization Potential6.50 eV
Ground State Electron Configuration5f12 6s2 6p6 6f2
Oxidation States+3
Selected Radioisotopes255Fm, 257Fm
Discovered byGhiorso and others, 1952
Copyright ©2008 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use and Privacy Notice.
Additional credits and copyright information.