Ra
Radium
Izinto 88 · 226.02541 u
Alkaline Earth Metal
s- iblock
Ixesha 7
Iqela 2
I-Solid kwi-RT
I-Radioactive
t½ 1600 years
I-Wikipedia →
I-radium yintsimbi esebenza kakhulu nge-radioactive xa isetyenziswa ngokubanzi kwipeyinti ekhanyayo.
Iimpawu Zobuchopho
| Ii-atom | 226.02541 u |
| Uxinano | 5.5 g/cm³ |
| Incopho yokubila: | 973.0 K |
| Incopho yokubila: | 2010.0 K |
| Ukubonakala | I-silvery-white metallic |
| I-State at Room Temp | I-Solid |
Iimpawu zekhemikhali
| Electronegativity | 0.9 (I-Polygon) |
| I-Ionization Energy | 509.3 kJ/mol |
| Electronegativity: | 9.65 kJ/mol |
| Iindawo zokuthambisa | +2 |
Iimpahla zephetshana elichazayo:
| Uqwalaselo lwe Electron | [Rn] 7s2 |
| Atomic radius: | 221.0 pm |
| I-Covalent Radius | 221.0 pm |
| I-Van der Waals Radius | 283.0 pm |
Ukufumana kwakhona
| Ifunyenwe Ngu | Marie Curie, Pierre Curie |
| Unyaka Wophando | 1898 |
| Indawo | Paris, France |
| Igama Elilandelayo | Latin 'radius' kuthetha umbhobho |
I-About Radium
I-radium yintsimbi ekhanyayo, emhlophe emhlophe ekhanyayo efunyenwe yiCuries. Ikhanya ngombala obomvu ngenxa yokukhanya okuphezulu. I-'Radium Girls' abapeyinta i-watches baphulukana noxinzelelo olukhulu lokutshiswa yi-radiation.
Iinkqubo
Isetyenziswa ngaphambili kwipeyinti ekhanyayo kunye nemithi ye-quack. Ngoku isetyenziswa kakhulu kwinkqubo yonyango lwe-radiation.
Inyathelo 1:
I-Radium Girls abapeyinta i-dail yewatchwatch ekhanyayo baphulukana nokuxhaphaza okubi, okuqhuba ekubeni kubekho imithetho yokhuseleko esebenza kwindawo.
I-Isotopes
| Inani le-Mass | Uninzi | Ixesha eliphakathi | Iqinile |
| 223 | - | 11.43 days | Akukho nanye |
| 224 | - | 3.6319 days | Akukho nanye |
| 226 | - | 1600 years | Akukho nanye |
| 228 | - | 5.75 years | Akukho nanye |
Uqwalaselo lwe Electron
[Rn] 7s2