Ampitahao ireo singantaharo
Safidio ny singantaharo 4 farafahakeliny mba hampitaha ny toetoetr'izy ireo mifampitohy.
Pa
Protactinium
#91 · Actinide
| Mass | 231.03588 u |
| Fiparitahan'ny loko | 15.37 g/cm³ |
| Mikoriana | 1841.0 K |
| Mameno | 4300.0 K |
| Electronegativity | 1.5 |
| Arika | 568.0 kJ/mol |
| Atomic radius | 163.0 pm |
| Block | f-block |
| Fanjakana (RT) | Mitambatra |
| Fandrindrana | [Rn] 5f2 6d1 7s2 |