Bohr Model Calculator (Hydrogen-Like Atoms)
Orbit radius, energy and speed of an electron in a hydrogen-like ion, plus the photon wavelength of a transition.
How to use the Bohr Model Calculator
- Enter or select: Atomic number Z, Initial level n, Final level n′.
- The results (Orbit radius rₙ, Energy Eₙ, Electron speed, Photon energy of n → n′, Photon wavelength, Spectral series) are calculated instantly as you type.
- Use “Copy link” to share the calculation with the same input values.
Formula
- rₙ = n²a₀/Z
- Eₙ = −13.6057 eV · Z²/n²
- 1/λ = R∞Z²(1/n′² − 1/n²)