An atom contains one proton, one electron, and one neutron. which two particles are most similar in mass?

a. the neutron and the electron
b. the proton and the electron
c. the proton and the neutron
d. the neutron and the atom

Option (C) is the correct answer.

Explanation:

Mass of a proton is equal to kg.

Mass of an electron is equal to kg.

Mass of a neutron is equal to kg.

Therefore, we can see that mass of a proton and mass of a neutron are equal.

Thus, we can conclude that the proton and the neutron are two particles which are most similar in mass.

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