Which of the following statements about the nucleus is false? A. Contains nearly all of the mass of the atom.

B. Able to be lost or gained in chemical reactions.

C. None of these

D. Made up of protons and neutrons

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.