Francium
Chikamu 87 · 223.01973 u
Francium ndiyo inonyanya kuomarara yezvisikwa zvinoitika zvinhu nehalf-life ye 22 maminitsi chete.
Maitiro ekushandisa
| Atomic radius: | 223.01973 u |
| Kuomarara | 1.87 g/cm³ |
| Kutonhora Point | 300.0 K |
| Kutonhora Point | 950.0 K |
| Kuoneka | Kuita |
| State at Room Temp | _Kukanganisa: |
Chemical zvinhu
| Electronegativity | 0.7 (Pauling) |
| 1st Ionization Energy | 380.0 kJ/mol |
| Electronegativity: | 46.89 kJ/mol |
| Oxygen | +1 |
Atomic Properties
| Kuisa Kugadzirisa | [Rn] 7s1 |
| Atomic radius: | 260.0 pm |
| Covalent Radius | 260.0 pm |
| Van der Waals radius | 348.0 pm |
Discovery
| Yakawanikwa ne | Marguerite Perey |
| Kuonekwa kwegore | 1939 |
| _Panzvimbo: | Paris, France |
| Akapihwa zita mushure me | France |
Nezve Francium
Francium isimbi ine simba rakawandisa re radioactive. Iyo isotopi ine nguva yakareba kwazvo yekurarama, ine nguva yakareba kwazvo yekurarama, ine nguva yakareba kwazvo yekurarama, ine nguva yakareba kwazvo yekurarama, ine nguva yakareba kwazvo yekurarama, ine nguva yakareba kwazvo yekurarama, ine nguva yakareba kwazvo yekurarama, ine nguva yakareba kwazvo yekurarama, ine nguva yakareba kwazvo yekurarama, ine nguva yakareba kwazvo yekurarama, ine nguva yakareba kwazvo yekurarama, ine nguva yakareba kwazvo yekurarama, ine nguva yakareba kwazvo yekurarama, ine nguva yakareba kwazvo yekurarama.
Mashandisiro & Maapplication
No zvekutengesa zvirongwa. Used chete mubasa rekutanga spectroscopy.
Nhoroondo yemitambo
At zhinji pamusoro 30 magiramu efrancium kuwanikwa mu Earth's yose crust, uye makuru mari yakaunganidzwa yaiva pamusoro 300,000 atoms.
Isotopes
| Mamwe marudzi ezvinyorwa | Kuwanda | Half-Life | _Kuchengeta |
| 221 | - | 4.9 minutes | Hapana |
| 223 | - | 22.0 minutes | Hapana |
Kuisa Kugadzirisa
[Rn] 7s1