Electron configuration for Astatine (element 85). Orbital diagram

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At (Astatine) is an element with position number 85 in the periodic table. Located in the VI period. Melting point: 302 ℃. Density: 6.4 g/cm³.

Electronic configuration of the Astatine atom in ascending order of orbital energies:
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁵

Electronic configuration of the Astatine atom in ascending order of the levels:
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p⁵

Reduced electronic configuration At:
[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁵

Below is the electronic diagram of the Astatine atom

Distribution of electrons over energy levels in the At atom
1-st level (K): 2
2-st level (L): 8
3-st level (M): 18
4-st level (N): 32
5-st level (O): 18
6-st level (P): 7

Distribution of electrons in the Astatine

Valence electrons of Astatine

The number of valence electrons in a Astatine atom - 7.
Below are their quantum numbers (N - energy, L - angular momentum, M - magnetic moment, S - spin )

Orbital	N	L	M	S
s	6	0	0	+1/2
s	6	0	0	-1/2
p	6	1	-1	+1/2
p	6	1	0	+1/2
p	6	1	1	+1/2
p	6	1	-1	-1/2
p	6	1	0	-1/2

Oxidation states of Astatine: -1, +1, +3, +5

Other elements

Electronic configurations of other elements

Polonium (Po) electron configuration
Radon (Rn) electron configuration
Electronic configuration table

Astatine electron configuration

Valence electrons of Astatine

Electronic configurations of other elements