The Bohr model of the atom was an early attempt, by Danish
theoretical physicist Niels Bohr in 1913, to understand the
properties of atoms by incorporating the wavelike nature of
electrons into an otherwise classical description. The basic
assumptions of the model are:
a. An electron in an atom moves in circular orbits about a
positively charged nucleus, with the Coulomb attraction providing
the centripetal force.
b. Since electrons are waves, an electron may only (stably)
orbit the nucleus at...