Electron Configuration Generator
Generate the electron configuration for any element by atomic number. Follows the Aufbau principle to fill s, p, d, and f orbitals.
Inputs
Results
Electron Configuration
1s2 2s2 2p6 3s2 3p6 4s2 3d6
Valence Electrons
2
Total Electrons26
Core Electrons24
Highest Shell (n)4
Unpaired Electrons (approx.)4
Noble Gas?No
Last Max10
How to Use This Calculator
- Enter the atomic number of the element (1–118).
- The calculator applies the Aufbau principle with Madelung energy ordering.
- Review the full electron configuration string and orbital filling order.
- Use this to predict chemical reactivity, valence electron count, and period/group placement.
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Formula
Aufbau: 1s → 2s → 2p → 3s → 3p → 4s → 3d → ...Related Calculators
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