Astatine

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Astatine
At
In situ availability:
Necessity:
Atomic number: 85
Atomic mass: [210]
group: 17
period: 6
normal phase: Solid
series: Halogens
density: No data
melting point: 575K,
302°C,
576°F
boiling point:
TeIXe
Po ← At → Rn
UuhUusUuo
Atomic radius (pm):
Bohr radius (pm):
Covalent radius (pm):
Van der Waals radius (pm):
ionic radius (pm): -
1st ion potential (eV): -
Electron Configuration
1s2
2s2 2p6
3s2 3p6 3d10
4s2 4p6 4d10 4f14
5s2 5p6 5d10
6s2 6p5
Electrons Per Shell
2, 8, 18, 32, 18, 7
Electronegativity: 2.2
Electron Affinity: 2.8
Oxidation states: +/-1, 3, 5, 7
Magnetism: ?
Crystal structure:

Astatine is a Halogen in group 17. It does not have any isotopes considered to be natural. Its longest-lived known isotope has an atomic number of 210. This element has no stable isotopes.




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