Astatine: electronic configuration and properties
Astatine has atomic number 85 and electronic configuration [Xe] 4f14 5d10 6s2 6p5. Explore its periodic behaviour and open the interactive atom model.
Open Astatine in 3DKey properties of Astatine
- Symbol
- At
- Atomic number
- 85
- Atomic mass
- 210
- Family
- halogen
- Electronic configuration
- [Xe] 4f14 5d10 6s2 6p5
- Shell distribution
- 2, 8, 18, 32, 18, 7
- Oxidation states
- -1, 1, 3, 5
- Standard state
- solid
Periodic behaviour
Atomic radius: not experimentally determined. Electronegativity: 2.2. First ionisation energy: 920 kJ/mol. Use these values comparatively across a period or group rather than memorising them in isolation.
NEET exam focus
For NEET, prioritise the NCERT electronic configuration, periodic position, common oxidation states, and direct trend-based comparisons involving Astatine.
Related halogen elements
Frequently asked questions
What is the electronic configuration of Astatine?
Astatine has electronic configuration [Xe] 4f14 5d10 6s2 6p5, with shell distribution 2, 8, 18, 32, 18, 7.
What are the oxidation states of Astatine?
The listed oxidation states are -1, 1, 3, 5.
How can I view the Astatine atom in 3D?
PracticeNEET's interactive periodic table provides a rotatable schematic atom with accurate electron populations by shell.