Argon |
| Simbool | Ar |
|---|---|
| Latynse naam | Argon |
| Atoomgetal | 18 |
| Periode | 3 |
| Element kategorie | Edelgasse |
| Relatieve atomiese massa | 39.948 |
| Groep | VIII.A |
| Elektronkonfigurasie | 1s2 2s2 2p6 3s2 3p6 |
| Digtheid [g/cm3] | 0.0017838 |
| Staat | Gas |
| Smeltpunt [°C] | -189.4 |
| Kookpunt [°C] | -185.87 |
| Kritiese Punt [°C] | -86.28 |
| Kritiese druk [MPa] | 4.988 |
| Atoomradius [pm] | 71 |
| Covalent radius [pm] | 97 |
| Termiese geleidingsvermoë [W m-1K-1] | 0.0177 |
| Hitte kapasiteit [J K-1g-1] | 0.52 |
| Ontdekking | 1894 |
| 1ste ionisasie-energie [eV] | 15.7596 |
| 2de ionisasie-energie [eV] | 27.629 |
| 3de ionisasie-energie [eV] | 40.74 |
| Stabiele isotope | 3 |
| Onstabiele isotope | 5 |