Part of Physics (Single Science) Unit 1: Atomic and nuclear physics Most of the mass and all of the positive charge of an atom is in the nucleus. Most of an atom is empty space, (a vacuum). In 1897, ...
THE GENERAL PICTURE OF THE ATOM. THE present state of atomic theory is characterised by the fact that we not only believe the existence of atoms to be proved beyond a doubt, butalso we even believe ...
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