Pm
Promethium
Zosankha 61 · 145.0 u
Promethium ndi imodzi mwa lanthanides radioactive amene alibe izotope yolimba.
Zochita za Fiziki
| Mafuta | 145.0 u |
| Kuwala | 7.26 g/cm³ |
| Kutentha | 1315.0 K |
| Kutentha | 3273.0 K |
| Kuoneka | Metal |
| State at Room Temp | M'gululi |
Makhalidwe a Chemical
| Electronegativity | 1.13 (Pauling) |
| 1st Ionization Energy | 540.0 kJ/mol |
| Electron Affinity | 12.45 kJ/mol |
| Oxygen | +2, +3 |
Zosankha
| Kusintha kwa ma electron | [Xe] 4f5 6s2 |
| Atomic radius | 183.0 pm |
| Covalent Radius | 199.0 pm |
| Kuwala kwa Van der Waals | 236.0 pm |
Kupeza
| Kupezeka ndi | Charles D. Coryell, Jacob A. Marinsky, Lawrence E. Glendenin |
| Kuzindikira chaka | 1945 |
| Malo | Oak Ridge, Tennessee, United States |
| Analimbikitsidwa ndi | Prometheus, Titan wa m'Baibulo la Chigiriki |
Za ine Promethium
Promethium ndi radioactive zosadziwika dziko metal oyamba anapangidwa kuchokera uranium fission zinthu mu 1945. trace ndalama zili m'chilengedwe kuchokera uranium kugwa. Promethium-147 amatulutsa beta radiation.
Kugwiritsa ntchito & Maphunziro
Ma batri a nyukiliya, zokongoletsa zowala, ma gauges a thickness, ndi ma beta radiation sources.
Fun Facts
Promethium ndi dzina la Prometheus, Titan amene anathawira moto - kugwirizana kwa chinthu choyamba anapeza mu maganizo a nyukiliya.
Isotopes
| Kukula kwa maselo | Kuchuluka | Half-Life | Wolimba |
| 145 | - | 17.7 years | Si |
| 147 | - | 2.6234 years | Si |
Kusintha kwa ma electron
[Xe] 4f5 6s2