Ampitahao ireo singantaharo
Safidio ny singantaharo 4 farafahakeliny mba hampitaha ny toetoetr'izy ireo mifampitohy.
Np
Neptunium
#93 · Actinide
| Mass | 237.04817 u |
| Fiparitahan'ny loko | 20.45 g/cm³ |
| Mikoriana | 917.0 K |
| Mameno | 4273.0 K |
| Electronegativity | 1.36 |
| Arika | 604.5 kJ/mol |
| Atomic radius | 155.0 pm |
| Block | f-block |
| Fanjakana (RT) | Mitambatra |
| Fandrindrana | [Rn] 5f4 6d1 7s2 |