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The most space of an atom is vacuum.
It’s the most massive part of the atom
In the nucleus.
oxygen
Nucleus
The nucleus is the most dense part of an atom.
Electron Cloud
The most mass of a atom is located in the nucleus, where the protons and the neutrons are located.
The center of an atom is the nucleus. Inside an atom you will find neutrons, electrons and protons. The nucleus is the most important part of an atom.
The extra nuclear part.(electronic shells)
The electron cloud that contains the electrons outside the nucleus takes up the most space of the atom.
the anti-proton