Name :  Zirconium
Symbol :  Zr
Atomic Number :  40
Atomic Weight :  91.224
Specific Heat :  0.27 J/gK
Melting Point :  1852°C ±2°C
Vaporization :  58.20 kJ/mol
Boiling Point :  4377°C
Electronegativity :  1.33
Density@293 K :  6.4 g/cm³
Discovered :  Martin Klaproth, Germany, 1789
Description :  Gray-white, lustrous, corrosion-resistant metal.
Uses :  Used in alloys such as zircaloy which is used in nuclear applications since it does not readily absorb neutrons. Also baddeleyite is used in lab crucibles. Used in high-performance pumps and valves. Clear zircon (ZrSiO4) is a popular gemstone.