90
Th
Thorium
232.038062
2
8
18
32
18
10
2
8
18
32
18
10
2
| Property | Value |
|---|---|
| Atoomnummer | 90 |
| Atoomgewicht | 232.038062 amu |
| Element family | Actinoids |
| Elektronische configuratie | 1s2 |
| Stable and very long lived isotopes | Geen |
| Previous element | Actinium |
| Next element | Protactinium |
| Dichtheid | 11.72 g/cm3 (STP) |
| Smelten | 1755 °C |
| Kookpunt | 4787 °C |
| Covalente straal | 1.75 Å |
| Ionstraal | 0.972 Å |
| Metalic radius | 1.79 Å |
| Eerst ionisatiepotentiaal | 6.084 eV |
| Elektronenaffiniteit | 0.608 eV |
| Electronegativity | 1.3 |
| Discovery year | 1829 |
| Sample compounds |
|---|
| Th(SO4)2 |
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