3D Bohr-model representation of the Hydrogen atom (symbol H, atomic number Z=1). Electron shell configuration: 1 electrons.
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Bohr model · educational
Bohr model of hydrogen
Hydrogen (H) has 1 electron, in a single shell. The diagram places them on circles around the nucleus, from the K shell — the closest — outward.
| Shell | Electrons |
|---|---|
| K (n = 1) | 1 |
The Bohr model is a teaching picture: electrons do not travel in circular orbits, but the number of electrons per shell is exact.
Related lesson
The three states of matter
Solid, liquid, gas: three ways to arrange particles. Consequences on shape, volume, and phase transitions.
8 minElectron configuration
Full1s¹
Short1s¹
Valence electrons1
KLMNOPQ shells
K1
Electronegativity
Pauling2.2
Allen2.3
Mulliken (eV)—
Atomic radii
Empirical25 pm
Calculated53 pm
Covalent31 pm
Van der Waals120 pm
Successive ionisation energies
I₁1312 kJ/mol
Electron affinity72.8 kJ/mol
Oxidation states
-1+1
Bold states = most common.
Warm-up
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