Protactinium/Properties
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| Atomic_symbol: | Pae | |
| Atomic number: | 91e | |
| Atomic mass: | 231.03588(2)e | |
| Standard phase: | Solide | |
| Elemental Class: | Actinidee | |
| Electronegativity: | 1.5e | |
| Melting point: | 1,572 °C e | |
| Boiling point: | ~4,000 °C e | |
| Note: Please see template {{Props}} for instructions on adding new properties of Protactinium to this table. | ||