Question

12 multiple answer 5 points which two atomic particles make up the atomic mass atom electron neutron proton

Explanation:

• An atom is made up of electrons, neutrons, and protons.
• The mass of an electron is negligible compared to that of neutrons and protons.
• The atomic mass is mainly determined by the sum of the masses of neutrons and protons in the nucleus.

Answer:

C. Neutron, D. Proton