Question

29 multiple choice 1 point which subatomic particles are responsible for the mass of an atom? electrons only protons and electrons neutrons and electrons protons and neutrons

Explanation:

Protons and neutrons are located in the nucleus of an atom and have significant mass. Electrons have a much smaller mass compared to protons and neutrons, so they contribute very little to the overall mass of an atom.

Answer:

D. Protons and neutrons