Barium |
| Simbool | Ba |
|---|---|
| Latynse naam | Baryum |
| Atoomgetal | 56 |
| Periode | 6 |
| Element kategorie | Alkaliese aardmetale |
| Relatieve atomiese massa | 137.327 |
| Groep | II.A |
| Electronegativiteit | 0.9 |
| Oksidering nommers | 2 |
| Elektronkonfigurasie | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s2 |
| Digtheid [g/cm3] | 3.5 |
| Staat | Vaste stof |
| Smeltpunt [°C] | 725 |
| Kookpunt [°C] | 1640 |
| Termiese geleidingsvermoë [W m-1K-1] | 18.4 |
| Hitte kapasiteit [J K-1g-1] | 0.204 |
| Ontdekking | 1808 |
| Hardheid [Mohs-skaal] | 1.25 |
| Young's modulus [GPa] | 13 |
| Elektriese geleiding [S m-1] | 2.8 · 106 |
| Shear modulus [GPa] | 4.9 |
| 1ste ionisasie-energie [eV] | 5.2117 |
| 2de ionisasie-energie [eV] | 10.004 |
| Stabiele isotope | 7 |
| Onstabiele isotope | 17 |