Question

Who first developed a mathematical expression to relate the visible wavelengths of light emitted by the hydrogen atom?.

Answer 1

Niel Bohr in 1913.

Niel conducted experiments with Hydrogen atoms and tried to correlate their emission spectrum with the "atomic fingerprint" he would get for the atom.

Unfortunately, his calculations only worked on the Hydrogen atom.

**Bohr constructed the Bohr model, which is the structural model of an atom.