In 1911, Hans Geiger and Ernest Marsden, working under Ernest Rutherford, conducted an experiment involving alpha
particles and gold foil that led to the discovery of the nucleus in atoms. in
The nucleus of an atom accounts for
O most of the size and mass of the
atom.
• very little of the size and mass of the atom.
© most of the atom's size but very little of its mass.
• most of the atom's mass but very little of its size.