- Atomic Radius (Å)
Zirconium is a chemical element with symbol Zr and atomic number 40. The name of zirconium is taken from the name of the mineral zircon, the most important source of zirconium. The word zircon comes from the Persian word zargun زرگون, meaning "gold-colored".
40
Atomic Number
91.22
Atomic Mass (u)
2125.15
Melting Point (K)
4682
Boiling Point (K)
6.52
Density (solid: g/cm³, gas: g/liter)
2.2
Atomic Radius (Å)
1.75
Covalent Radius (Å)
1.33
Electronegativity
6.63
First Ionization Energy (eV)
41.81
Electron Affinity
5
Number of Shells
2, 8, 18, 10, 2
Electron Shell Occupations
0.28
Specific Heat (J/g)