Astatine atom & ion lab
Change the electron count of Astatine and inspect its charge, shells and reviewed atomic properties.
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Scientific learning path
- 01UnderstandLive
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Explanation mode
Core label represents the fixed nuclear charge; individual neutrons are not inferred from standard atomic weight.
Reviewed atomic properties
Unavailable measurements remain explicitly unavailable.
First ionization energy899 kJ mol⁻¹
Covalent radius150 pm
Electronegativity2.2 Pauling
The rarest naturally occurring element; less than a gram exists in the Earth’s crust at any moment. Mass shown is for At-210.
Description of this simulation
Astatine is neutral here: 85 protons are balanced by 85 electrons across shells 2, 8, 18, 32, 18, 7.
Quick test · 3 questions
At
Astatine
- Protons
- 85
- Electrons
- 85
- Shells
- 2 · 8 · 18 · 32 · 18 · 7
- Configuration
- [Xe] 4f14 5d10 6s2 6p5
- Common oxidation states
- -1, 1, 3, 5
- Phase near room conditions
- solid
What this model shows — and what it simplifies
Educational ModelThe nuclear charge stays fixed at 85 protons, which is what defines Astatine.
Where do we see this in real life?
The electron count and measured properties of Astatine help determine how it bonds, reacts and is identified in chemical materials.
Explain this result
Scientific review record
Building- Module version
- v1 bundled
- Published
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- Last reviewed
- Not yet verified
- Academic level
- Undergraduate
- Reviewer
- Not publicly assigned
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