At
Astatine
Qaybta 85 · 209.98715 u
Astatine waa qaybta ugu yar ee dabiiciga ah ee dhulka.
Eeg astaamaha
| Atomic mass | 209.98715 u |
| Cidhiidhi | 7.0 g/cm³ |
| Natiijooyinka | 575.0 K |
| Natiijooyinka | 610.0 K |
| Muuqaalka | Dhab ahaantii metal ah |
| Xaaladda heerkulka qolka | Cidhiidhi |
Eegista
| Electronegativity | 2.2 (Pauling) |
| 1st Ionization | 899.0 kJ/mol |
| Istaraatiijiyad | 270.1 kJ/mol |
| Nidaamka | -1, +1, +3, +5, +7 |
_Cusub:
| Nidaamka | [Xe] 4f14 5d10 6s2 6p5 |
| Awooda | 150.0 pm |
| Xaraf | 150.0 pm |
| Van der Waals | 202.0 pm |
Dib u eegista
| La Ogaaday | Dale R. Corson, Kenneth Ross MacKenzie, Emilio Segre |
| Sannadka la helay | 1940 |
| _Meel | Berkeley, California, Maraykanka |
| Magacaabista | Giriiga 'astatos' macnaheedu waa aan xasilloonayn |
_Warbixinta Astatine
Astatine waa aad u yar, radioactive, iyo halogen ugu culus ee la yaqaan. Ka yar 30 garaam ka jira dhulka korkiisa waqti kasta. Waa marnaba la arkin in bulk.
Barnaamijyada
Daaweynta kansarka ee suurtagalka ah (astatine-211), weli waa tijaabo.
Xaqiiqo xiiso leh
Astatine marnaba la arki karo indhaha la'aan ah - waxaa jira ka yar 30 garaam oo dhan dhulka oo dhan waqti kasta.
Isotoobyo
| Tirada | Tirada | Half-Life | Xasiloon |
| 209 | - | 5.41 hours | Ha |
| 210 | - | 8.1 hours | Ha |
| 211 | - | 7.214 hours | Ha |
Nidaamka
[Xe] 4f14 5d10 6s2 6p5