Np
Neptunium
Qaybta 93 · 237.04817 u
Aqoonsiga
f-block
Waqtiga 7
Cidhiidhi at RT
Radioactive
t½ 2.144 million years
Isku dhafan
Wikipedia →
Neptunium waa transuranium qaybta ugu horeysay ee la ogaado.
Eeg astaamaha
| Atomic mass | 237.04817 u |
| Cidhiidhi | 20.45 g/cm³ |
| Natiijooyinka | 917.0 K |
| Natiijooyinka | 4273.0 K |
| Muuqaalka | Madow |
| Xaaladda heerkulka qolka | Cidhiidhi |
Eegista
| Electronegativity | 1.36 (Pauling) |
| 1st Ionization | 604.5 kJ/mol |
| Istaraatiijiyad | 45.85 kJ/mol |
| Nidaamka | +3, +4, +5, +6, +7 |
_Cusub:
| Nidaamka | [Rn] 5f4 6d1 7s2 |
| Awooda | 155.0 pm |
| Van der Waals | 221.0 pm |
Dib u eegista
| La Ogaaday | Edwin McMillan, Philip Abelson |
| Sannadka la helay | 1940 |
| _Meel | Berkeley, California, Maraykanka |
| Magacaabista | Waxaa loo bixiyey dayaxgacmeedka Neptune, ka dibna uranium (Uranus) |
_Warbixinta Neptunium
Neptunium waa actinide radioactive silvery iyo transuranium ugu horeysay ee la ogaaday. Waa la soo saaray sida alaab-qeybiye ee reactors nukliyeerka.
Barnaamijyada
Ogsijiinta, ka hor-tagga plutonium-238 (xawaaraha hawada), iyo cilmi baarista nukliyeerka.
Xaqiiqo xiiso leh
Neptunium waa qaybta transuranium-ka ugu horeysay ee la isku qurxiyo, oo fureysa albaabka dhammaan qaybaha culus.
Isotoobyo
| Tirada | Tirada | Half-Life | Xasiloon |
| 236 | - | 154,000 years | Ha |
| 237 | - | 2.144 million years | Ha |
Nidaamka
[Rn] 5f4 6d1 7s2