Name Yttrium
Symbol Y
Atomic Number 39
Atomic Mass 88.90585 atomic mass units
Number of Protons 39
Number of Neutrons 50
Number of Electrons 39
Melting Point 1523.0° C
Boiling Point 3337.0° C
Density 4.469 grams per cubic centimeter
Normal Phase Solid
Family Transition Metals
Period 5
Cost $75 per ounce



Origin of Name After Ytterby, a Swedish town
Date and Place of Discovery In 1794 in Sweden
Discovered by Johann Gadolin
Common Compounds
Interesting facts
  • It does not occur as a free element in nature.
  • It is highly toxic.
Common Uses
  • Microwave filters
  • Magnets
  • Gemstones
  • Increase strength of aluminum and magnesium alloys
  • Infrared lasers
  • Spark plugs
  • Deoxidizers
  • Propane lanterns
  • LEDs
  • Treatment of some carcinomas
  • Semiconductors
  • Nodular cast iron
  • Stabilizes zirconium in jewelry


Photo Courtesy of
Chemical Elements
Jefferson Lab
Web Elements

Yttrium Atomic Structure Elements by Name Elements by Number Home