Which one of the following scientists mentioned that an electron in an atom could revolve in certain stable orbits without the emission of radiant energy?

Step-by-step solution

Niels Bohr introduced the concept that electrons orbit the nucleus in specific, quantised orbits or energy levels without radiating energy, which was a departure from classical physics. According to Bohr's model, an electron in a stable orbit does not emit radiation, thus preventing it from spiraling into the nucleus.