Zirconium (Zr)
Zirconium
Zirconium (Zr) is a transition metal in period 5, group 4. Its relative atomic mass is 91.224 and the molar mass of the atom is 91.224 g/mol.
Atomic number 40
Atomic mass 91.224
Molar mass 91.224 g/mol
Category Transition metal Solid
Properties of zirconium
| Atomic number | 40 |
|---|---|
| Symbol | Zr |
| Latin name | Zirconium |
| Relative atomic mass | 91.224 |
| Molar mass | 91.224 g/mol |
| Group, period, block | 4, 5, d |
| Category | Transition metal |
| State at 20 °C | Solid |
| Electron configuration | [Kr] 4d² 5s² |
| Electronegativity (Pauling) | 1.33 |
| Atomic radius | 155 pm |
Electron configuration of zirconium
Electrons per shell
K2L8M18N10O2
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d² 5s²
Noble-gas notation
40 protons · 40 electrons[Kr] 4d² 5s²
Formula and compounds of zirconium
Simple substanceZrzirconiumMolar mass of Zr: 91.224 g/mol
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Frequently asked questions
The relative atomic mass of zirconium is 91.224, so the molar mass of the atom is 91.224 g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d² 5s². Noble-gas notation: [Kr] 4d² 5s².