Fr
Fransiiyum
Qaybta 87 · 223.01973 u
Francium waa ugu aan xasilloonayn dabiiciga ah ee ka dhaca qaybta leh a half-life of kaliya 22 daqiiqo.
Eeg astaamaha
| Atomic mass | 223.01973 u |
| Cidhiidhi | 1.87 g/cm³ |
| Natiijooyinka | 300.0 K |
| Natiijooyinka | 950.0 K |
| Muuqaalka | sida lacagta oo kale ah |
| Xaaladda heerkulka qolka | Cidhiidhi |
Eegista
| Electronegativity | 0.7 (Pauling) |
| 1st Ionization | 380.0 kJ/mol |
| Istaraatiijiyad | 46.89 kJ/mol |
| Nidaamka | +1 |
_Cusub:
| Nidaamka | [Rn] 7s1 |
| Awooda | 260.0 pm |
| Xaraf | 260.0 pm |
| Van der Waals | 348.0 pm |
Dib u eegista
| La Ogaaday | Marguerite Perey |
| Sannadka la helay | 1939 |
| _Meel | Paris, Faransiiska |
| Magacaabista | France ka dib loo magacaabay |
_Warbixinta Fransiiyum
Francium waa metal alkali aad u radioactive. Its ugu dheer ee nool isotope wuxuu leeyahay nolol-buuxa ah oo kaliya 22 daqiiqo. Waa marnaba la soo saaro tiro muuqata oo ahaa qaybta ugu dambeysay ee la helay ee dabiiciga ah.
Barnaamijyada
No codsiyada ganacsi. Ku isticmaali oo kaliya cilmi baarista spectroscopy asalka ah.
Xaqiiqo xiiso leh
At ugu badan oo ku saabsan 30 garaam oo francium ka jira dhulka oo dhan, iyo inta ugu badan ee la soo ururiyey waxaa ku saabsan 300,000 atoms.
Isotoobyo
| Tirada | Tirada | Half-Life | Xasiloon |
| 221 | - | 4.9 minutes | Ha |
| 223 | - | 22.0 minutes | Ha |
Nidaamka
[Rn] 7s1