| Element | |
|---|---|
40ZrZirconium91.22422
8 18 10 2 |
|
| Basic properties | |
|---|---|
| Atomic number | 40 |
| Atomic weight | 91.2242 amu |
| Element family | Transition metals |
| Period | 5 |
| Group | 4 |
| Block | d-block |
| Discovery year | 1789 |
| Isotope distribution |
|---|
90Zr 51.45% 91Zr 11.32% 92Zr 17.19% 94Zr 17.28% |
| Physical properties | |
|---|---|
| Appearance | silvery white |
| State at STP | Solid |
| Density | 6.506 g/cm3 (STP) |
| Melting | 1852 °C |
| Boiling | 4377 °C |
| Heat of fusion | 14.0 kJ/mol |
| Heat of vaporization | 591 kJ/mol |
| Molar heat capacity | 25.36 J/(mol·K) |
| Electronic properties | |
|---|---|
| Electrons per shell | 2, 8, 18, 10, 2 |
| Electronic configuration | [Kr] 5s2 |
|
Bohr atom model
| |
|
Orbital box diagram
| |
| Valence electrons | 4 |
| Lewis dot structure |
|
| Common reactions |
|---|
| Zr + N2 = ZrN |
| Zr + N2 = Zr3N4 |
| Zr + N = ZrN |
Zirconium is an element number 40 from transition metals family. Its symbol is Zr. Zirconium atomic weight is 91.2242 amu. Zr stable and long lived isotopes are 90Zr: 51.45%, 91Zr: 11.32%, 92Zr: 17.19%, 94Zr: 17.28%. Zirconium electronic configuration is [Kr] 5s24d2. Sample compounds that contain Zirconium are ZrO2, ZrSiO4, ZrCl4, ZrI4. Zirconium was discovered in 1789.
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