Pa
Protactinium
Chikamu 91 · 231.03588 u
Protactinium ndiyo imwe yezvinyorwa zvakaoma uye zvakaoma kuwanikwa zvakasikwa.
Maitiro ekushandisa
| Atomic radius: | 231.03588 u |
| Kuomarara | 15.37 g/cm³ |
| Kutonhora Point | 1841.0 K |
| Kutonhora Point | 4300.0 K |
| Kuoneka | Silvery metallic, yakasimba luster |
| State at Room Temp | _Kukanganisa: |
Chemical zvinhu
| Electronegativity | 1.5 (Pauling) |
| 1st Ionization Energy | 568.0 kJ/mol |
| Electronegativity: | 53.03 kJ/mol |
| Oxygen | +3, +4, +5 |
Atomic Properties
| Kuisa Kugadzirisa | [Rn] 5f2 6d1 7s2 |
| Atomic radius: | 163.0 pm |
| Van der Waals radius | 243.0 pm |
Discovery
| Yakawanikwa ne | Kasimir Fajans, Oswald Helmuth Gohring |
| Kuonekwa kwegore | 1913 |
| _Panzvimbo: | Karlsruhe, Germany |
| Akapihwa zita mushure me | Greek 'protos' uye 'actinium' zvinoreva baba ve actinium |
Nezve Protactinium
Protactinium ndiro chidimbu chesimbi chinogadzirwa nesimbi inopisa, iyo inogadzirwa neactinium-227 kuburikidza nekuvapo kweactinium-227. Protactinium inonziwo "actinium-227" uye inotengeswa nemari inosvika $280,000 pagramu.
Mashandisiro & Maapplication
Kuongorora kwesainzi, kunyanya geochronology (kuziva nguva yesediment yemusango).
Nhoroondo yemitambo
Protactinium inodhura pamusoro pe $ 280,000 pa gramu, ichiita kuti ive imwe yemhando yepamusoro yezvigadzirwa zvinoitika zvakajairika.
Isotopes
| Mamwe marudzi ezvinyorwa | Kuwanda | Half-Life | _Kuchengeta |
| 231 | 1.0% | 32,760 years | Hapana |
Kuisa Kugadzirisa
[Rn] 5f2 6d1 7s2