Pm
I-Promethium
Ingxenye 61 · 145.0 u
I-Promethium iyi-radioactive lanthanide kuphela engasebenzisi izi-isotope eziqinile.
Izici Zobuchopho
| I-Atom Mass | 145.0 u |
| Ubukhulu | 7.26 g/cm³ |
| Izinga lokuncibilika | 1315.0 K |
| Izinga lokubopha | 3273.0 K |
| Ukubonakala | I-Metallic |
| Isimo ku-Room Temp | Iqinile |
Izici ze-chemical
| Electronegativity | 1.13 (I-Pauling) |
| I-Ionization Energy | 540.0 kJ/mol |
| I-electron affinity | 12.45 kJ/mol |
| I-Oxidation States | +2, +3 |
Izici ze-Atom
| I-electron | [Xe] 4f5 6s2 |
| I-Atom Radius | 183.0 pm |
| I-Covalent Radius | 199.0 pm |
| I-Van der Waals Radius | 236.0 pm |
Ukuqapha
| Itholakele ngu | Charles D. Coryell, Jacob A. Marinsky, Lawrence E. Glendenin |
| Unyaka wokuqamba | 1945 |
| Indawo | i-Oak Ridge, i-Tennessee, i-USA |
| Ibizwa nge | Prometheus, i-Titan ye-Greek mythology |
Malunga I-Promethium
I-Promethium iyinsimbi yezwe encane esebenza ngogesi ekhiqizwa kuqala kusuka kuma-uranium fission products ngo-1945. Ama-trace akhona emvelo kusuka ekuguqukeni kwe-uranium. I-Promethium-147 ikhipha ukushisa kwe-beta.
Izisebenziso
Amabhethri e-nuclear, imibala ekhanyayo, ama-gauge aqinile, nama-beta radiation sources.
Iqiniso elijabulisayo
I-Promethium ibizwa ngegama likaPrometheus, i-Titan owine umlilo -- efanele ingxenye etholakele emiphumeleni ye-nuclear.
Isibonisi
| Inani le-mass | Ubukhulu | Isikhathi esingu-half-life | Iqinile |
| 145 | - | 17.7 years | Akukho |
| 147 | - | 2.6234 years | Akukho |
I-electron
[Xe] 4f5 6s2