3D Bohr-model representation of the Nickel atom (symbol Ni, atomic number Z=28). Electron shell configuration: 2, 8, 16, 2 electrons.
Scroll to activate 3D
Bohr model · educational
Bohr model of nickel
Nickel (Ni) has 28 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) | 16 |
| 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
Catalysis
Catalyst, activation energy, energy profile. Homogeneous, heterogeneous, enzymatic catalysis.
11 minElectron configuration
Full1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁸ 4s²
Short[Ar] 3d⁸ 4s²
Valence electrons10
KLMNOPQ shells
K2
L8
M16
N2
Electronegativity
Pauling1.91
Allen1.88
Mulliken (eV)—
Atomic radii
Empirical135 pm
Calculated149 pm
Covalent124 pm
Van der Waals163 pm
Ionic radii (Shannon-Prewitt)
+269 pm
Successive ionisation energies
I₁737.1 kJ/mol
I₂1753 kJ/mol
I₃3395 kJ/mol
I₄5300 kJ/mol
I₅7339 kJ/mol
Electron affinity112 kJ/mol
Oxidation states
-2-10+1+2+3+4
Bold states = most common.
Warm-up
Nickel — 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