Question

multiple choice question
what did the bohr model of the atom predict?
the existence of unknown subatomic particles
the energy equivalent of mass
frequencies of emission spectrum lines in hydrogen
the speed of light

Explanation:

The Bohr model focused on hydrogen. It used quantization of electron energy levels. By calculating energy differences between levels ($\Delta E = E_{final}-E_{initial}$), and using $E = h
u$ ($h$ is Planck's constant, $
u$ is frequency), it could predict the frequencies of emission spectrum lines in hydrogen. The existence of unknown subatomic particles wasn't its prediction. The energy - equivalent of mass ($E = mc^{2}$) is from Einstein's theory. The speed of light is a fundamental constant not predicted by the Bohr model of the atom.

Answer:

O frequencies of emission spectrum lines in hydrogen