Question

Which of the following assumptions made by Neils Bohr regarding the hydrogen atom was NOT new and "radical"?

• A. Electrons are only stable in certain orbits
• B. Atoms only emit electromagnetic radiation when electrons transition to lower energy states
• C. The Coulomb force is responsible for keeping the electron in orbit around the positive nucleus
• D. An electron in a hydrogen atom can only orbit the nucleus if its angular momentum is some integer multiple of $h/2\pi$
• E. All of the above were new and "radical"

Answer 1

The correct option is C The Coulomb force is responsible for keeping the electron in orbit around the positive nucleus

It is the electromagnetic force, one of the four fundamental forces of nature, theta governs the interaction of electrons with the positively charged nucleus to form an individual atom. The EM force is carried by photons, which serve in the capacity of gauge bosons as they do this force interaction.