Astatine
Astatine (At) is a chemical element belonging to the Halogen category, with atomic number 85 and atomic mass 210.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.
Identity
- Name: Astatine
- Symbol: At
- Atomic number: 85
- Atomic mass: 210.0000 u
Position in the periodic table
- Group: 17
- Period: 6
- Category: Halogen
Physico-chemical properties
- Standard state: Solid
- Melting point: Approx. 300°C
- Density: Unknown (estimated high)
- Electron configuration: [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁵
Scientific description
Astatine is a chemical element with symbol At and atomic number 85. It belongs to the category of Halogen and occupies group 17 and period 6. Its standard atomic mass is 210.0000 u.
KODO: P4