B. Bohr assumed that electrons move in fixed orbits
The currently accepted atomic model (the quantum mechanical model) states that electrons do not move in fixed orbits like planets around the sun, but rather exist in electron clouds or orbitals where their precise location cannot be determined, only probability distributions.
What is the major difference between the Bohr model and the currently accepted atomic model
A. Bohr assumed that electrons could be found within an electron cloud
B. Bohr assumed that electrons move in fixed orbits
C. Bohr assumed that the nucleus was positive
D. Bohr Assumed that electrons have very little mass
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