Electron Configuration
This interactive simulator explores Electron Configuration in Chemistry. Fill orbitals visually with Aufbau principle animation. Use the controls to change the scenario; watch the visualization and any graphs or readouts to connect the model with lectures, labs, and homework.
Who it's for: Best once you already know the basic definitions and want to build intuition. Typical context: Chemistry.
Key terms
- electron
- configuration
- electron config
- chemistry
Aufbau prediction
Reference (periodic dataset)
Compact notation
1s2 2s2 2p6 3s2 3p4
1s2 2s2 2p6 3s2 3p4
How it works
**Aufbau** filling (Klechkowski order) predicts how subshells fill with increasing **Z**. Many ground-state atoms follow it, but **exceptions** (Cr, Cu, Mo, Pd, โฆ) lower the energy by promoting one **s** electron into **d** or **f**. The **reference** row uses curated configurations from the periodic dataset.
Key equations
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