Where is most of the mass of an atom located?
Where are the neutrons in an atom?
Which particles can be found in the nucleus of an atom?
Fill in the blanks: An atom is a combination of a dense nucleus, containing and neutrons, and bound in the shells around the nucleus.
Where are the protons in an atom?
Approximately how large is the radius of an atomic nucleus compared to the radius of the atom, ?
Where are the electrons in an atom?