40 · Zr
Zirconium
Earth identified by Klaproth in 1789, metal isolated by Berzelius in 1824.
Identity
- Atomic number
- 40
- Symbol
- Zr
- Canonical name
- Zirconium
- Category
- transition metal
- Group
- 4
- Period
- 5
- Block
- d
Properties
These quantities come from the Periodic Table JSON compilation. They have not yet been checked, one by one, against CIAAW atomic weights or NIST measurements. A value marked estimated is not a measurement.
- Atomic mass
- 91.2242 u
- Electron configuration
- [Kr] 4d2 5s2
- Electrons per shell
- 2, 8, 18, 10, 2
- Standard state
- solid
- Density
- 6.52 g/cm³
- Melting point
- 2,128 K
- Boiling point
- 4,650 K
- Electronegativity
- 1.33 Pauling
- First ionization energy
- 640.1 kJ/mol
- Electron affinity
- 41.806 kJ/mol
History
The earth of zircon
Identification · confirmed · 1789
Klaproth identifies a new earth in zircon. He does not obtain the pure metal.
Metal isolated
Isolation · confirmed · 1824
Berzelius isolates zirconium.
Etymology
- Theme
- mineral
- Language
- persan
- Root
- zargun
- Meaning
- zircon, gold-colored
Scientists
Places and institutions
- Berlin — historical setting : Prussia, then Germany — present country : Germany
- Stockholm — historical setting : Sweden — present country : Sweden
See also
Sources
- IUPAC, Periodic Table of the Elements
- Bowserinator, Periodic Table JSON. Compilation secondaire d’où viennent les grandeurs physiques importées (masse, densité, températures, énergies). Elles ne sont pas revérifiées une à une auprès du NIST ou de la CIAAW.
- John Emsley, Nature’s Building Blocks: An A–Z Guide to the Elements