Which of the following statements about atomic structure is false? a. In the Bohr model of the atom, electrons orbit around the nucleus in well-defined, allowed orbits
b. The mass of an atom is equally divided between the nucleus and the electron cloud
c. Atoms emit radiation when an electron makes a transition from one orbit to another
d. An atom can become ionized if it absorbs a photon with energy that is larger than the binding energy of one of its electrons