Th
Thorium
Z = 90 · Actinide · 232.0 u
Basic properties
- Atomic number (Z)
- 90
- Standard atomic mass
- 232.0 u
- Category
- Actinide
Isotopes & cross-section data
| Isotope | Mass (A) | Half-life | ZAID | Libraries |
|---|---|---|---|---|
| Th-229 | 229 | 7920 y | 90229 | .80c.71c |
| Th-230 | 230 | 7.538e4 y | 90230 | .80c.71c.70c |
| Th-232 | 232 | 1.405e10 y | 90232 | .80c.71c.70c |