Practice calculating protons, neutrons, and electrons for IONS and ISOTOPES. This bundle includes four worksheets each with a complete answer key:1 for protons, neutrons, electrons1 for protons, neutrons, electrons, ions1 for protons, neutrons, electrons, isotopes1 for protons, neutrons, electrons, ions, and isotopesNeed More Resources on Isotopes and Average Atomic Mass?How to Calculate Average Atomic Mass - ScaffoldedCalculating Average Atomic Mass Challenge ProblemsCalculating Average Atomic