The three particles that make up atoms are
a. protons, neutrons, and isotopes.
b. neutrons, isotopes, and electrons.
c. positives, negatives, and neutrals.
d. protons, neutrons, and electrons
The answer is d.protons, neutrons and electrons. Protons and neutrons are in the nucleus of the atom and the electrons orbit in the shells of the atom, surrounding the nucleus.
