Ampitahao ireo singantaharo
Safidio ny singantaharo 4 farafahakeliny mba hampitaha ny toetoetr'izy ireo mifampitohy.
Fr
Francium
#87 · Metaly alkaline
| Mass | 223.01973 u |
| Fiparitahan'ny loko | 1.87 g/cm³ |
| Mikoriana | 300.0 K |
| Mameno | 950.0 K |
| Electronegativity | 0.7 |
| Arika | 380.0 kJ/mol |
| Atomic radius | 260.0 pm |
| Block | s-block |
| Fanjakana (RT) | Mitambatra |
| Fandrindrana | [Rn] 7s1 |