Which of the following conclusions could not be derived from Rutherford’s
α -particle scattering experiment?
(i) Most of the space in the atom is empty.
(ii) The radius of the atom is about 10–10 m while that of a nucleus is 10–15 m.
(iii) Electrons move in a circular path of fixed energy called orbits.
(iv) Electrons and the nucleus are held together by electrostatic forces of
Option (iii) Electrons move in a circular path of fixed energy called orbits is the answer.