Pm
Promethium
Chikamu 61 · 145.0 u
Promethium ndiyo chete radioactive lanthanide ine hapana isotopes vakachengeteka.
Maitiro ekushandisa
| Atomic radius: | 145.0 u |
| Kuomarara | 7.26 g/cm³ |
| Kutonhora Point | 1315.0 K |
| Kutonhora Point | 3273.0 K |
| Kuoneka | Metallic |
| State at Room Temp | _Kukanganisa: |
Chemical zvinhu
| Electronegativity | 1.13 (Pauling) |
| 1st Ionization Energy | 540.0 kJ/mol |
| Electronegativity: | 12.45 kJ/mol |
| Oxygen | +2, +3 |
Atomic Properties
| Kuisa Kugadzirisa | [Xe] 4f5 6s2 |
| Atomic radius: | 183.0 pm |
| Covalent Radius | 199.0 pm |
| Van der Waals radius | 236.0 pm |
Discovery
| Yakawanikwa ne | Charles D. Coryell, Jacob A. Marinsky, Lawrence E. Glendenin |
| Kuonekwa kwegore | 1945 |
| _Panzvimbo: | Oak Ridge, Tennessee, United States |
| Akapihwa zita mushure me | Prometheus, Titan weGreek mythology |
Nezve Promethium
Promethium (147Pro) i radioactive element, iyo inonziwo "yepanyika-yekare" nekuti inoonekwa seimwe yezvinyorwa zvepanyama zveuranium. Promethium-147 inoburitsa beta-rays.
Mashandisiro & Maapplication
Nuclear mabhatiri, luminous paint, hupamhi mamita, uye beta radiation zviwanikwa.
Nhoroondo yemitambo
Promethium yakapihwa zita rake mushure mePrometheus, Titan uyo akatora moto - kunyatsoenderana nechigadzirwa chakawanikwa mukuita kwenuclear.
Isotopes
| Mamwe marudzi ezvinyorwa | Kuwanda | Half-Life | _Kuchengeta |
| 145 | - | 17.7 years | Hapana |
| 147 | - | 2.6234 years | Hapana |
Kuisa Kugadzirisa
[Xe] 4f5 6s2