Name Tantalum
Symbol Ta
Atomic Number 73
Atomic Mass 180.9 atomic mass units
Number of Protons 73
Number of Neutrons 108
Number of Electrons 73
Melting Point 2996.0 C
Boiling Point 5425.0 C
Density 16.654 grams per cubic centimeter
Normal Phase Solid
Family Transition Metals
Period 6
Cost $50 per ounce



Origin of Name After King Tantalus in Greek mythology
Date and Place of Discovery In 1802 in Ytterby, Sweden
Discovered by Anders Gustaf Ekenberg
Common Compounds
Interesting facts
  • It is highly corrosion-resistant.
  • It is easily fabricated and a good conductor of heat and electricity.
Common Uses
  • Electronic components, mainly capacitors and resistors
  • Portable telephones
  • Pagers
  • Personal computers
  • Automotive electronics
  • Alloys used in jet engines
  • Missile parts
  • Nuclear reactors
  • Refractive index glass used in camera lenses
  • Vacuum furnace parts


Photo Courtesy of About.com
Chemical Elements
Jefferson Lab

Tantalum Atomic Structure Elements by Name Elements by Number Home