40 Zr
Transition metal
Zirconium
Used in nuclear reactor cladding.
Properties of Zirconium
- Atomic number (Z)
- 40
- Symbol
- Zr
- Atomic mass
- 91.224 g/mol
- Category
- Transition metal
- Group
- 4
- Period
- 5
- Electron configuration
- [Kr] 4d² 5s²
- Electronegativity (Pauling)
- 1.33
- Atomic radius
- 206 pm
- First ionization energy
- 640 kJ/mol
- Melting point
- 2128 K (1854.8 °C)
- Boiling point
- 4682 K (4408.9 °C)
- Density
- 6.506 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1789
Frequently asked questions
What is Zirconium?
Zirconium (Zr) is a transition metal, element number 40 on the periodic table. Used in nuclear reactor cladding.
What is the atomic number and atomic mass of Zirconium?
Zirconium has atomic number 40 and an atomic mass of about 91.224 g/mol.
What is the electron configuration of Zirconium?
The electron configuration of Zirconium is [Kr] 4d² 5s².
Where is Zirconium on the periodic table?
Zirconium sits in group 4, period 5, and is classified as a transition metal.