Show Elements
| ID | 32 |
|---|---|
| Symbol | Pr |
| Image | |
| Name | Promethium |
| Density (g/cm<sup>3</sup>) | 7.26 |
| Atomic Number | 61 |
| Molecular Weight | 145 |
| Melting Point (K) | 1373 |
| Boiling Point (K) | 3273 |
| Specific Heat Capacity (J/kg K) | |
| Electro Negativity | 1.13 |
| Curie temperature (K) | |
| Bohr Magneton (J/T) | |
| Magnetization Saturation (MA m<sup>-1</sup>) | |
| Crystal Structure | Double hexagonal close-packed (dhcp) |
| Appearance | Silver |
| Element category | Lanthanide |
| Magnetic ordering | Paramagnetic |
| Discovery | Chien Shiung Wu, Emilio Segrè, Hans Bethe (1945) |
| General Information | Promethium is a rare-earth metal that emits beta radius. It is very radoiactive and rare, so it is little studied: its chemical and physical properties are not well defined. Promethium salts have a pink or red colour. |
| Image source | https://www.raremetalbuy.com/wp-content/uploads/2016/07/Promethium.jpg |
| General informations source | https://www.lenntech.com/periodic/elements/pm.htm |