Basic Information

Name: Zirconium 
Symbol: Zr 
Atomic Number: 40 
Atomic Mass: 91.224 amu 
Melting Point: 1852.0 °C (2125.15 K, 3365.6 °F) 
Boiling Point: 4377.0 °C (4650.15 K, 7910.6 °F) 
Number of Protons/Electrons: 40 
Number of Neutrons: 51 
Classification: Transition Metal 
Crystal Structure: Hexagonal 
Density @ 293 K: 6.49 g/cm3 
Color: Grayish
Date of Discovery: 1789 
Discoverer: Martin Klaproth 
Name Origin: zircon (mineral) 
Uses: nuclear applications 
Obtained From: zircon, baddeleyite