Pa
I-protactinium
Ingxenye 91 · 231.03588 u
I-protactinium iyinye yezingxenye ezincane kakhulu futhi ezibiza kakhulu ezikhona ngokuvamile.
Izici Zobuchopho
| I-Atom Mass | 231.03588 u |
| Ubukhulu | 15.37 g/cm³ |
| Izinga lokuncibilika | 1841.0 K |
| Izinga lokubopha | 4300.0 K |
| Ukubonakala | Isibhakabhaka esimnyama, isikhashana |
| Isimo ku-Room Temp | Iqinile |
Izici ze-chemical
| Electronegativity | 1.5 (I-Pauling) |
| I-Ionization Energy | 568.0 kJ/mol |
| I-electron affinity | 53.03 kJ/mol |
| I-Oxidation States | +3, +4, +5 |
Izici ze-Atom
| I-electron | [Rn] 5f2 6d1 7s2 |
| I-Atom Radius | 163.0 pm |
| I-Van der Waals Radius | 243.0 pm |
Ukuqapha
| Itholakele ngu | Kasimir Fajans, Oswald Helmuth Gohring |
| Unyaka wokuqamba | 1913 |
| Indawo | i-Karlsruhe, eJalimane |
| Ibizwa nge | i-Greek 'protos' ne-'actinium' isho ukuthi umzali we-actinium |
Malunga I-protactinium
I-protactinium iyi-actinide eqinile, emnyama-emnyama. Ikhiqiza i-actinium-227 ngokuphazamiseka. Kuyinto ebulalayo futhi enamandla kakhulu, ibiza cishe ama- $280,000 ngegramu.
Izisebenziso
Ucwaningo lwesayensi, ikakhulukazi i-geochronology (usuku lokuzalwa kwe-ocean sediment).
Iqiniso elijabulisayo
I-protactinium ibiza cishe i- $ 280,000 ngegramu, yenza ibe enye yezinto ezibiza kakhulu ezikhona ngokuvamile.
Isibonisi
| Inani le-mass | Ubukhulu | Isikhathi esingu-half-life | Iqinile |
| 231 | 1.0% | 32,760 years | Akukho |
I-electron
[Rn] 5f2 6d1 7s2