ATOMIC STRUCTURE SIMULATION
▸ Building the nucleus: protons + neutrons…
▸ Filling electrons into shells K · L · M
▸ Loading the Bohr energy-level ladder
▸ Calibrating the emission line spectrum
▸ Ready — Online. ✅
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⌂ Matter
Simulation room
Atomic structure
Atomic Structure · Bohr
Online
e shells · spectrum
Energy-level ladder
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Bohr model
e changes level → emits photon
Element
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Protons (Z)
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Neutrons
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Mass number A
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Shell configuration
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Valence e
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Charge
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Notes
Proton count = the element. The outermost shell (valence e) sets the chemistry. e changing level → emits a colored photon = line spectrum.
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🔄 Reset
⚛️ Anatomy
Change Z (element) in the right column · pump energy to make e jump & emit a photon · click anatomy/concepts for details
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Emission line spectrum
colored line = emitted photon