Which of the answer choices best represents the approximate relative mass of the three subatomic particles?
(select all that apply.)

protons = neutrons
electrons = neutrons
neutrons > electrons
protons > electrons

The choices that best represent relative mass are

protons = neutrons

neutrons > electrons

protons > electrons

Explanation:

If we assume that the relative mass of proton is 1, then the relative mass of neutron is also equal to 1. The relative mass of electron is about 1/2000 the mass of proton so if the mass of proton is 1 then the relative mass of electron would be 0.00055. Therefore, the mass of electron and neutron cannot be the same and the electron relative mass will be less than that of neutron and proton.

10 years is the answer