Ac
I-Actinium
Ingxenye 89 · 227.02775 u
I-Actinium iyigama elifanayo le-actinide series futhi ikhanya ngombala obomvu emnyama.
Izici Zobuchopho
| I-Atom Mass | 227.02775 u |
| Ubukhulu | 10.07 g/cm³ |
| Izinga lokuncibilika | 1323.0 K |
| Izinga lokubopha | 3471.0 K |
| Ukubonakala | Isibhakabhaka-simhlophe esimnyama |
| Isimo ku-Room Temp | Iqinile |
Izici ze-chemical
| Electronegativity | 1.1 (I-Pauling) |
| I-Ionization Energy | 499.0 kJ/mol |
| I-electron affinity | 33.77 kJ/mol |
| I-Oxidation States | +2, +3 |
Izici ze-Atom
| I-electron | [Rn] 6d1 7s2 |
| I-Atom Radius | 195.0 pm |
| I-Van der Waals Radius | 260.0 pm |
Ukuqapha
| Itholakele ngu | Friedrich Oskar Giesel, Andre-Louis Debierne |
| Unyaka wokuqamba | 1899 |
| Indawo | i-Paris, i-France |
| Ibizwa nge | isiGreki 'aktis' isho i-ray noma i-beam |
Malunga I-Actinium
Actinium isoft, silvery-white radioactive metal ukuthi glows blue ngenxa yayo radioactivity enamandla ionizing umoya obhekene. Actinium-225 ihlolwe ukubhekana alpha ukwelashwa isifo sikashukela.
Izisebenziso
Ama-neutron sources, ucwaningo lwesifo sikashukela (actinium-225), nama-thermoelectric generators.
Iqiniso elijabulisayo
I-Actinium inamandla amakhulu okushisa, ikhanya ngombala obomvu emnyama ngenxa yokugqwala umoya ojikelezayo.
Isibonisi
| Inani le-mass | Ubukhulu | Isikhathi esingu-half-life | Iqinile |
| 225 | - | 10.0 days | Akukho |
| 227 | - | 21.772 years | Akukho |
I-electron
[Rn] 6d1 7s2