Name Zirconium
Symbol Zr
Atomic Number 40
Atomic Mass 91.224 atomic mass units
Number of Protons 40
Number of Neutrons 51
Number of Electrons 40
Melting Point 1852.0 C
Boiling Point 4377.0 C
Density 6.49 grams per cubic centimeter
Normal Phase Solid
Family Transition Metals
Period 5
Cost $150 per kilogram



Origin of Name From the Arabic word zargun, meaning gold color
Date and Place of Discovery In 1789 in Germany
Discovered by Martin Heinrich Klaproth
Common Compounds
Interesting facts
  • It reacts with oxygen and nitrogen in the atmosphere
  • It forms a film that prevents corrosion.
  • It is resistant to weak acids.
  • Its principle ore is zircon (ZrSiO4) is found in Florida, South Carolina, Australia, Brazil.
  • It is found in S-type stars and has been found in the sun, lunar rock and in meteorites.
  • Its alloy, baddeleyite, can withstand very high temperatures.
Common Uses
  • Jewelry (gem products)
  • Nuclear reactors
  • Coating for fuel parts
  • Laboratory crucibles
  • Furnace linings
  • "Getters" in vacuum tubes
  • Surgical appliances
  • Superconductive magnets
  • Photoflash bulbs
  • Primers
  • Rayon Spinnerets
  • Lamp filaments
  • Poison ivy lotions
  • Glass and ceramic ovens


Photo Courtesy of About.com
Cary Academy
Chemical Elements
Corrosion Source
Croatian Ministry of Education

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