Pm
Promethium
Z = 61 · Lanthanide · 145.0 u
Basic properties
- Atomic number (Z)
- 61
- Standard atomic mass
- 145.0 u
- Category
- Lanthanide
Isotopes & cross-section data
| Isotope | Mass (A) | Half-life | ZAID | Libraries |
|---|---|---|---|---|
| Pm-147 | 147 | 2.6234 y | 61147 | .80c.71c |
| Pm-149 | 149 | 53.08 h | 61149 | .80c.71c |