The rule stating that the sum of two emitted frequencies in an atomic spectrum equals a third frequency is attributed to the physicist
A)Niels Bohr.
B)Max Planck.
C)W. Ritz.
D)Einstein

Question

Quizplus · Accepted Answer

The rule described is known as the Ritz combination principle and is named after the Swiss physicist Wilhelm Ritz. The principle states that in atomic spectra, the sum or difference of two spectral lines equals a third spectral line.

The Rule Stating That the Sum of Two Emitted Frequencies