Fr
I-Francium
Ingxenye 87 · 223.01973 u
I-Alkali metal
s-block
Isikhathi 7
Iqembu 1
Iqinile ku-RT
I-Radioactive
t½ 22.0 minutes
I-Wikipedia →
I-Francium iyingxenye ehlala isikhathi eside kakhulu etholakala ngokuvamile enesikhathi sokuphila esingu-22 kuphela.
Izici Zobuchopho
| I-Atom Mass | 223.01973 u |
| Ubukhulu | 1.87 g/cm³ |
| Izinga lokuncibilika | 300.0 K |
| Izinga lokubopha | 950.0 K |
| Ukubonakala | Kubukeka sengathi igolide elimnyama |
| Isimo ku-Room Temp | Iqinile |
Izici ze-chemical
| Electronegativity | 0.7 (I-Pauling) |
| I-Ionization Energy | 380.0 kJ/mol |
| I-electron affinity | 46.89 kJ/mol |
| I-Oxidation States | +1 |
Izici ze-Atom
| I-electron | [Rn] 7s1 |
| I-Atom Radius | 260.0 pm |
| I-Covalent Radius | 260.0 pm |
| I-Van der Waals Radius | 348.0 pm |
Ukuqapha
| Itholakele ngu | Marguerite Perey |
| Unyaka wokuqamba | 1939 |
| Indawo | i-Paris, i-France |
| Ibizwa nge | Ibizwa nge-France |
Malunga I-Francium
I-Francium iyinsimbi ye-alkali enamandla amakhulu. I-isotope yayo ehlala isikhathi eside inesikhathi esingu-22 semizuzu kuphela. Ayikho ekhiqizwe ngezinga elibonakalayo futhi iyingxenye yokugqibela etholakalayo emvelo.
Izisebenziso
No izicelo zebhizinisi. Zisetshenziswa kuphela kucwaningo lwe-spectroscopy oluyinhloko.
Iqiniso elijabulisayo
At ngaphezu kuka 30 amagramu we francium zikhona ezweni lonke isikhumba, futhi inani elikhulu eqoqwe kwaba mayelana 300,000 atoms.
Isibonisi
| Inani le-mass | Ubukhulu | Isikhathi esingu-half-life | Iqinile |
| 221 | - | 4.9 minutes | Akukho |
| 223 | - | 22.0 minutes | Akukho |
I-electron
[Rn] 7s1