Everyone at that time imagined the atom as a ... the electrons in his model lined up with the regular patterns (spectral series) of light emitted by real hydrogen atoms. Bohr's theory that ...

This 'solar system' model of the atom is the way that most people think about atoms today. It is known as the Rutherford-Bohr model of atomic structure. The neutron was difficult to discover ...

The New Zealander had discovered the atomic nucleus in 1911 and further investigations by Bohr led to his quantum model of the atom where electrons travel around the nucleus in certain orbits. When ...

They stuck with the age-old belief that the atom is indivisible ... Acceptance of this model grew after it was modified with quantum theory by Niels Bohr. For his work with radiation and the ...

Save guides, add subjects and pick up where you left off with your BBC account. An element's atomic number defines it. An element with 17 protons will always be chlorine. However an element's mass ...