Bohr energy levels (hydrogen-like) (E_n = −13.6 Z²/n² eV)
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E_n = −13.6 Z²/n² eV
What each symbol means
| Symbol | What it stands for |
|---|---|
| Z | Atomic number |
| n | Principal quantum number |
| E_n | Total mechanical energy in nth orbit (eV, negative = bound) |
| 13.6 eV | Ionisation energy magnitude for hydrogen ground state |
When to use this
Non-relativistic Bohr; infinite nuclear mass approximation.