Ampitahao ireo singantaharo
Safidio ny singantaharo 4 farafahakeliny mba hampitaha ny toetoetr'izy ireo mifampitohy.
Pm
Promethium
#61 · Lanthanide
| Mass | 145.0 u |
| Fiparitahan'ny loko | 7.26 g/cm³ |
| Mikoriana | 1315.0 K |
| Mameno | 3273.0 K |
| Electronegativity | 1.13 |
| Arika | 540.0 kJ/mol |
| Atomic radius | 183.0 pm |
| Block | f-block |
| Fanjakana (RT) | Mitambatra |
| Fandrindrana | [Xe] 4f5 6s2 |