Fr
Francium
Zosankha 87 · 223.01973 u
Francium ndi chinthu chosakhazikika kwambiri chomwe chimapezeka m'chilengedwe ndi half-life ya maola 22 okha.
Zochita za Fiziki
| Mafuta | 223.01973 u |
| Kuwala | 1.87 g/cm³ |
| Kutentha | 300.0 K |
| Kutentha | 950.0 K |
| Kuoneka | Kuwala kwa golide |
| State at Room Temp | M'gululi |
Makhalidwe a Chemical
| Electronegativity | 0.7 (Pauling) |
| 1st Ionization Energy | 380.0 kJ/mol |
| Electron Affinity | 46.89 kJ/mol |
| Oxygen | +1 |
Zosankha
| Kusintha kwa ma electron | [Rn] 7s1 |
| Atomic radius | 260.0 pm |
| Covalent Radius | 260.0 pm |
| Kuwala kwa Van der Waals | 348.0 pm |
Kupeza
| Kupezeka ndi | Marguerite Perey |
| Kuzindikira chaka | 1939 |
| Malo | Paris, France |
| Analimbikitsidwa ndi | France |
Za ine Francium
Francium ndi kwambiri radioactive alkalin metal.Iye ali ndi moyo waitali isotope ali ndi half-life ya 22 mphindi okha.Iye sanali anapangidwa m'madera owoneka bwino ndi anali mapeto element anapeza m'chilengedwe.
Kugwiritsa ntchito & Maphunziro
No ntchito zapadziko lonse lapansi. Kugwiritsa ntchito kokha mu spectroscopy yoyamba.
Fun Facts
At ambiri za 30 ma gramu a francium ali m'dziko lonse la crust, ndi zikuluzikulu ndalama anasonkhanitsa anali pafupifupi 300,000 atomu.
Isotopes
| Kukula kwa maselo | Kuchuluka | Half-Life | Wolimba |
| 221 | - | 4.9 minutes | Si |
| 223 | - | 22.0 minutes | Si |
Kusintha kwa ma electron
[Rn] 7s1