What two types of particles exist within an atomic nucleus?
Select one:
a. Protons and neutrons
b. Protons and neutrinos
c. Positrons and neutrons
d. Neutrons and electrons

Respuesta :

There are three main types of subatomic particles: Protons, neutrons, and electrons. The nucleons (particles within the nucleus) are the protons and neutrons. Thus the answer is A.
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