What are basic similarities and differences of the Bohr and quantum mechanics models of the atom?
Bohr introduced the revolutionary idea of “quantum numbers” which said that electrons could only exist at set energies within the atom rather than any old energy. This was to explain why all the electrons in an atom don’t just fall into the nucleus. The idea had to be modified and revamped to fit the increasing amount of physical data over the years and expanded to four “quantum numbers”, one of which was non-integer (the electron spin). The idea of a planetary atom where the electrons moved around in orbits persisted under the Bohr model. However, it was gradually realised that you could not in fact measure anything about the atom without disturbing it so orbits really had no meaning because you could never hope to actually define them. In real life we pretend we can measure things exactly. Before radar, a speed trap consisted of a policeman with a stop watch timing you over a set distance. To have any accuracy, the distance had to be at least 100 yards or metres, plenty of time to sl
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- What are basic similarities and differences of the Bohr and quantum mechanics models of the atom?
