Fr
Francium
Izinto 87 · 223.01973 u
I-Alkali Metal
s- iblock
Ixesha 7
Iqela 1
I-Solid kwi-RT
I-Radioactive
t½ 22.0 minutes
I-Wikipedia →
I-Francium yinxalenye ehlala ixesha elide ehlala ixesha elide ehlala ixesha elide elimalunga nemizuzu engama-22.
Iimpawu Zobuchopho
| Ii-atom | 223.01973 u |
| Uxinano | 1.87 g/cm³ |
| Incopho yokubila: | 300.0 K |
| Incopho yokubila: | 950.0 K |
| Ukubonakala | I-silvery metallic |
| I-State at Room Temp | I-Solid |
Iimpawu zekhemikhali
| Electronegativity | 0.7 (I-Polygon) |
| I-Ionization Energy | 380.0 kJ/mol |
| Electronegativity: | 46.89 kJ/mol |
| Iindawo zokuthambisa | +1 |
Iimpahla zephetshana elichazayo:
| Uqwalaselo lwe Electron | [Rn] 7s1 |
| Atomic radius: | 260.0 pm |
| I-Covalent Radius | 260.0 pm |
| I-Van der Waals Radius | 348.0 pm |
Ukufumana kwakhona
| Ifunyenwe Ngu | Marguerite Perey |
| Unyaka Wophando | 1939 |
| Indawo | Paris, France |
| Igama Elilandelayo | Ibizwa ngokuba yi-France |
I-About Francium
I-Francium yi-alkali metal esebenza ngokugqithisileyo. I-isotope yayo ephilayo ihlala ixesha elide ihlala ngaphantsi kwemizuzu engama-22 kuphela. Ayikho into eyenziweyo ngezinto ezibonakalayo kwaye yayiyeyona nto yokugqibela efunyenwe kubuhle.
Iinkqubo
No inkqubo yezorhwebo. Isetyenziswa kuphela kuvavanyo olusisiseko lwe-spectroscopy.
Inyathelo 1:
At uninzi malunga ne-30 grams ye-francium ikhona kwihlabathi lonke, kwaye inani elikhulu elifunyenwe limalunga ne-300,000 ye-atoms.
I-Isotopes
| Inani le-Mass | Uninzi | Ixesha eliphakathi | Iqinile |
| 221 | - | 4.9 minutes | Akukho nanye |
| 223 | - | 22.0 minutes | Akukho nanye |
Uqwalaselo lwe Electron
[Rn] 7s1