Question

graded formative: unit 2 study guide part 1
how do the masses of protons, neutrons, and electrons compare?
mass of proton:
mass of neutron:
mass of electron:

Explanation:

Protons and neutrons have approximately the same mass, about 1 atomic mass unit (amu). Electrons have a much smaller mass, about 1/1836 amu compared to protons and neutrons. This is because protons and neutrons are found in the nucleus and contribute significantly to the mass of an atom, while electrons are in the electron - cloud surrounding the nucleus and have a negligible mass in comparison.

Answer:

The mass of a proton and a neutron are approximately equal (about 1 amu each), while the mass of an electron is much smaller (about 1/1836 amu of a proton/neutron).