Rydberg formula (hydrogen-like spectra) (1/λ = R∞ Z² (1/n_f² − 1/n_i²))
jee-mainjee-advancedneet-ug
1/λ = R∞ Z² (1/n_f² − 1/n_i²)
What each symbol means
| Symbol | What it stands for |
|---|---|
| Z | Atomic number |
| λ | Photon wavelength (m) |
| n_f | Lower quantum number in transition |
| n_i | Upper quantum number (emission: n_i > n_f) |
| R_∞ | Rydberg constant ≈ 1.097×10⁷ m⁻¹ |
When to use this
Hydrogen-like atom; fine structure neglected.