Element
Rydberg Formula
1/λ = R_H·Z² · (1/n₁² − 1/n₂²)
R_H = 1.097 × 10⁷ m⁻¹
Series
Result
Wavelength λ
Wavenumber ν̃
Frequency ν
Energy ΔE
Region
Series
Visible Spectrum + Spectral Lines
380 nm430 nm490 nm 560 nm620 nm680 nm750 nm
Series Lines
n₂ → n₁ λ (nm) Energy (eV) Region Colour
Energy Level Diagram