The majority of the mass of ordinary matter resides in the:
A) electrons and the nuclei, shared about equally.
B) electromagnetic energy stored in the atom, from E = mc².
C) nuclei of atoms.
D) electron clouds around the nuclei of atoms.

Question

Quizplus · Accepted Answer

The majority of the mass of ordinary matter resides in the nuclei of atoms, which are made up of protons and neutrons. Electrons, on the other hand, have a much smaller mass and occupy a relatively large amount of space in the electron clouds around the nuclei. The electromagnetic energy stored in the atom, from E=mc², is a negligible portion of the mass.

The Majority of the Mass of Ordinary Matter Resides in The