Which incorrect aspect of Rutherford’s model was fixed by Bohr’s model?(1 point)
Bohr's model fixed the issue of the electrons' motion in Rutherford's model. Rutherford's model suggested that the electrons in an atom would spiral into the nucleus due to their continuous emission of electromagnetic radiation. However, Bohr's model introduced the concept of electron energy levels or orbits, suggesting that the electrons could only occupy specific energy levels and would not emit radiation while in these stable orbits. This resolved the incorrect notion of electron motion in Rutherford's model.
Bohr's model of the atom corrected the incorrect aspect of Rutherford's model regarding the stability and arrangement of electrons in an atom's energy levels. Rutherford's model proposed that electrons orbited the nucleus in a continuous manner, much like planets orbiting the sun. However, this model failed to account for the stability of the atom, as accelerating electrons would emit energy and eventually collapse into the nucleus. Bohr addressed this by proposing that electrons could only exist in specific energy levels or orbits, characterized by fixed energy values. This model introduced the concept of quantized energy levels and provided a more accurate description of atomic structure.
To understand how Bohr's model fixed an incorrect aspect of Rutherford's model, we first need to understand both models.
1. Rutherford's model: Proposed by Ernest Rutherford, the Rutherford model described the atom as a miniature solar system. According to this model, the atom consists of a small, dense, positively charged nucleus at the center, with negatively charged electrons orbiting around it at various distances.
2. Bohr's model: Developed by Niels Bohr, the Bohr model of the atom incorporated the newly discovered principles of quantum mechanics. It suggested that electrons can only exist in specific energy levels or shells around the nucleus. Electrons move in circular orbits within these shells and can jump between energy levels by either gaining or losing energy.
Now, to answer the question, Bohr's model fixed the incorrect aspect of Rutherford's model regarding the movement of electrons around the nucleus. Rutherford's model suggested that electrons could occupy any orbit around the nucleus, much like planets orbiting the sun. However, this was inconsistent with the experimental observations of atomic spectra.
Bohr's model addressed this problem by proposing that electrons could only occupy specific energy levels or shells. These energy levels were quantized, meaning they can only have certain discrete values. Electrons can transition between these levels by emitting or absorbing energy in discrete packets called quanta or photons. This explanation successfully accounted for the observed discrete spectral lines emitted by atoms.
In summary, Bohr's model fixed the incorrect aspect of Rutherford's model by introducing the concept of quantized energy levels for electrons and explaining the discrete nature of atomic spectra.