What particles make up most of the mass of an atom? The mass of an atom is made up of protons and neutrons in the nucleus. ... The volume of an atom is made up from the electrons. read more
Empty space makes up most of the volume of an atom. The nucleus (protons and neutrons) make up most of the mass. read more
Almost all of the volume of an atom is empty space. For example, the hydrogen atom, which has one proton, one neutron and one electron, is 99.99 percent empty space, with just 0.0000000000004 percent of its volume occupied by subatomic particles. read more
The volume of an atom is made up from the electrons. A neutral atom of sodium has 11 protons. Use this information to explain the total number of electrons that are in a sodium atom. read more