Pm
Promethium
Izinto 61 · 145.0 u
I-Promethium yiyona lanthanide isebenza nge-radiation kuphela engenazo ii-isotope ezizinzileyo.
Iimpawu Zobuchopho
| Ii-atom | 145.0 u |
| Uxinano | 7.26 g/cm³ |
| Incopho yokubila: | 1315.0 K |
| Incopho yokubila: | 3273.0 K |
| Ukubonakala | I-Metallic |
| I-State at Room Temp | I-Solid |
Iimpawu zekhemikhali
| Electronegativity | 1.13 (I-Polygon) |
| I-Ionization Energy | 540.0 kJ/mol |
| Electronegativity: | 12.45 kJ/mol |
| Iindawo zokuthambisa | +2, +3 |
Iimpahla zephetshana elichazayo:
| Uqwalaselo lwe Electron | [Xe] 4f5 6s2 |
| Atomic radius: | 183.0 pm |
| I-Covalent Radius | 199.0 pm |
| I-Van der Waals Radius | 236.0 pm |
Ukufumana kwakhona
| Ifunyenwe Ngu | Charles D. Coryell, Jacob A. Marinsky, Lawrence E. Glendenin |
| Unyaka Wophando | 1945 |
| Indawo | Oak Ridge, Tennessee, USA |
| Igama Elilandelayo | Prometheus, i-Titan ye-mythology yaseGrike |
I-About Promethium
I-Promethium yintsimbi yehlabathi encinci esebenza nge-radiation eyenziwe kuqala ngemveliso yokwahlula-hlula i-uranium ngo-1945. Amaxabiso e-trace akhona endalo ukusuka ekubeni i-uranium iphele. I-Promethium-147 ikhupha i-beta radiation.
Iinkqubo
Iibhetri zenuclear, ipeyinti ekhanyayo, izilinganisi zobubanzi, kunye nezixhobo zokukhanya kwe-beta.
Inyathelo 1:
I-Promethium ibizwa ngokuba yiPrometheus, i-Titan eyaphula umlilo -- elungele i-element efunyenwe kwi-nuclear reactions.
I-Isotopes
| Inani le-Mass | Uninzi | Ixesha eliphakathi | Iqinile |
| 145 | - | 17.7 years | Akukho nanye |
| 147 | - | 2.6234 years | Akukho nanye |
Uqwalaselo lwe Electron
[Xe] 4f5 6s2