40
Zr
Zirconium
Zirconium
Zirconium (Zr)
Transition Metals · Solid · Period 5 · Group 4
Element Properties
- Atomic Number
- 40
- Symbol
- Zr
- Atomic Mass
- 91.22
- Category
- Transition Metals
- Standard State
- Solid
- Period
- 5
- Group
- 4
- Electronegativity
- 1.33
- Atomic Radius
- 186
- Ionization Energy
- 6.63
- Electron Affinity
- 0.43
- Oxidation States
- +4
- Melting Point
- 2128 K (1854.85 °C)
- Boiling Point
- 4682 K (4408.85 °C)
- Density
- 6.52
- Electron Configuration
- [Kr]5s2 4d2
- Year Discovered
- 1789
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Frequently asked questions
What is the atomic number of Zirconium?
The atomic number of Zirconium is 40, which equals the number of protons in its nucleus.
What is the atomic mass of Zirconium?
The atomic mass of Zirconium is approximately 91.22 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Zirconium?
The electron configuration of Zirconium is [Kr]5s2 4d2.
Where is Zirconium in the periodic table?
Zirconium is located in period 5, group 4.
When was Zirconium discovered?
Zirconium was discovered in 1789.