3D Bohr-model representation of the Oxygen atom (symbol O, atomic number Z=8). Electron shell configuration: 2, 6 electrons.
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Bohr model · educational
Bohr model of oxygen
Oxygen (O) has 8 electrons, spread over 2 shells. The diagram places them on circles around the nucleus, from the K shell — the closest — outward.
| Shell | Electrons |
|---|---|
| K (n = 1) | 2 |
| L (n = 2) | 6 |
The Bohr model is a teaching picture: electrons do not travel in circular orbits, but the number of electrons per shell is exact.
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Solid, liquid, gas: three ways to arrange particles. Consequences on shape, volume, and phase transitions.
8 minElectron configuration
Full1s² 2s² 2p⁴
Short[He] 2s² 2p⁴
Valence electrons6
KLMNOPQ shells
K2
L6
Electronegativity
Pauling3.44
Allen3.61
Mulliken (eV)—
Atomic radii
Empirical60 pm
Calculated48 pm
Covalent66 pm
Van der Waals152 pm
Ionic radii (Shannon-Prewitt)
-2140 pm
Successive ionisation energies
I₁1313.9 kJ/mol
I₂3388.3 kJ/mol
I₃5300.5 kJ/mol
I₄7469.2 kJ/mol
I₅10989.5 kJ/mol
Electron affinity141 kJ/mol
Oxidation states
-2-10+1+2
Bold states = most common.
Warm-up
Oxygen — do you remember?
3 questions on this page. The right answer shows every time, and nothing is asked of you to play.
No account · one minute