What particles make up most of the mass of an atom? What takes up most of the volume of an atom?

Question

Please help me with this. :) THANKS!

Answer 1

Protons and neutrons, which together comprise the nucleus, contain almost all of the mass of an atom.

Answer 2

Most of the mass is made up by the proton in hydrogen and the neutrons in everything else. Everything but hydrogen usually has at least as many neutrons as protons, and neutrons weigh a tiny bit more.
Volume is a little trickier. It depends on what you mean, since there isn't really any such thing as a solid object when you get that small.
If you considered the atom to be everything inside the outer electron shell you could say the electrons occupy the most volume, even though it's 99.99...% empty space.

Answer 3

the protons and neutrons soak up the main mass, they're created from 3 quarks each and each and are equivalent to one atomic mass unit (amu) each and each. The electron clouds, area occupied by way of the electrons as a results of fact the orbit the nucleus, soak up the main quantity of the atom.

Answer 4

Nearly all the mass of an atom is in its nucleus (protons and neutrons), yet almost all the space in an atom is occupied by its electrons.

Answer 5

Depends on the element and even the isotope, but usually neutrons make up most of the mass, with protons being a close second (they are often equal, or nearly so).
Empty space makes up most of the volume (which is why neutronium, which has no empty space, is thousands of tons per cubic cm!)

Answer 6

If we look at "Quantum Mechanics" and "String Theory" we must conclude that the Atom's main constituents are:Electrons, Protons and Neutrons. But, the "Space" that separates them is "FULL" of a seething ocean of energy that has 11 dimensions wound up into Planks Length.

The "Void" or "Vacuum" of space is anything but. ;-)