Compare the relative masses of protons, neutrons and electrons.

Within The structure of an atom, this learning objective asks you to compare the relative masses of protons, neutrons and electrons. Focus on the approved ideas proton, neutron, electron, relative mass and connect them clearly to Atoms and isotopes. A strong response should state the relevant particle, radiation, isotope, decay, half-life or nuclear-equation idea, then explain how it answers the exact command word. Avoid swapping nearby concepts such as atomic number and mass number, isotope and ion, alpha, beta and gamma radiation, or contamination and irradiation.