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10203040506070809010011000.511.522.53‌ Å

40 - Zirconium transition metal

Atomic Mass (u)

91.22

Density (g/cm³)

6.52

Phase

Solid

Year of Discovery

1789
ZirconiumZrElectron 1Electron 2Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6Electron 7Electron 8Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6Electron 7Electron 8Electron 9Electron 10Electron 11Electron 12Electron 13Electron 14Electron 15Electron 16Electron 17Electron 18Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6Electron 7Electron 8Electron 9Electron 10Electron 1Electron 2

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  u Atomic Mass
2125.15  K Melting Point
4682  K Boiling Point
6.52  g/cm³ Density
2.2  Å Atomic Radius
1.75  Å Covalent Radius
1.33 Electronegativity
6.63  eV First Ionization Energy
41.81 Electron Affinity
5 Number of Shells
2, 8, 18, 10, 2 Electron Shell Occupations
0.28  J/g Specific Heat