In the field of chemistry or physics, the term "heavy atoms" is commonly used to refer to all the atoms except hydrogen. Hydrogen is not considered a heavy atom because it is the lightest element with only one proton and one electron in its nucleus. However, all other elements, including carbon, oxygen, nitrogen, gold, and uranium, are classified as heavy atoms because they have a larger number of protons, neutrons, and electrons compared to hydrogen. Thus, the term "heavy atom" is used to distinguish between hydrogen and the rest of the elements in the periodic table based on their physical and chemical properties.What is the number of heavy atoms present in the molecule?