Which statement(s) correctly compare the masses of protons, neutrons, and electrons? Select two options.

Question

Protons and neutrons have similar mass.
Protons and electrons have similar mass.
Neutrons and electrons have similar mass.
Protons are smaller than a neutron or an electron.
Neutrons are smaller than a proton or an electron.
Electrons are smaller than a proton or a neutron.

Answer 1

The two statements that correctly compare the masses of protons, neutrons, and electrons are:

1. Protons and neutrons have similar mass.
2. Electrons are smaller than a proton or a neutron.

Protons and neutrons have similar masses, each being about 1 atomic mass unit (amu), while electrons are much lighter, with a mass of about 1/1836 of a proton.