3D Bohr-model representation of the Zinc atom (symbol Zn, atomic number Z=30). Electron shell configuration: 2, 8, 18, 2 electrons.
Scroll to activate 3D
Bohr model · educational
Bohr model of zinc
Zinc (Zn) has 30 electrons, spread over 4 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) | 8 |
| M (n = 3) | 18 |
| N (n = 4) | 2 |
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
Electron configuration
Filling rules (Aufbau, Pauli, Hund), notations like [Ar] 4s² 3d⁶, valence electrons. Iron, copper, transition metal cases.
12 minElectron configuration
Full1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s²
Short[Ar] 3d¹⁰ 4s²
Valence electrons12
KLMNOPQ shells
K2
L8
M18
N2
Electronegativity
Pauling1.65
Allen1.588
Mulliken (eV)—
Atomic radii
Empirical135 pm
Calculated142 pm
Covalent122 pm
Van der Waals139 pm
Ionic radii (Shannon-Prewitt)
+274 pm
Successive ionisation energies
I₁906.4 kJ/mol
I₂1733.3 kJ/mol
I₃3833 kJ/mol
I₄5731 kJ/mol
I₅7970 kJ/mol
Electron affinity—
Oxidation states
-20+1+2
Bold states = most common.
Warm-up
Zinc — 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