In an experiment magnesium ribbon was heated in air the product formed was found heavier than original ribbon. potassium manganate(vii)was heated im air and product formed was found lighter. explain different observations made

Timed ! in which of these statements are protons, electrons, and neutrons correctly compared? quarks are present in protons and neutrons but not in electrons. quarks are present in protons, neutrons, and electrons. quarks are present in neutrons and electrons but not in protons. quarks are present in protons and electrons but not in neutrons.