Owen Weaver


Atomic Number- 65

Atomic Mass- 159

  • Tb-159 is only naturally occurring isotope
  • also only stable isotope


  • Discovered by Carl Gustav Mosander in 1843
  • Separated an impure sample of Ytterium
  • Found terbium oxide and erbium oxide


  • Used in low energy light bulbs
  • Used in an alloy called terfenol-d
  • expands in a magnetic field
  • used in loudspeakers


Jefferson Lab Periodic Table: http://education.jlab.org/itselemental/ele065.html

Royal Society of Chemistry Periodic Table: http://www.rsc.org/periodic-table/element/65/terbium

Element Card: Gray, Theodore W. (2008). The Photographic Card Deck of the Elements.

Elements Book: Gray, Theodore W. (2009). The Elements: A visual exploration of every known atom in the universe. New York: Black Dog & Leventhal Publishers, Inc.