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According to the quantum mechanical model of the atom, how is the motion and position of an electron best described? A. An electron moves throughout the atom in a completely random path. B. An electron moves along an orbital path at a fixed distance from the nucleus. C. An electron moves within a cloud-like region around or near the nucleus. D. An electron stays fixed in one position near the nucleus.

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Answer:

C.

Explanation:

Quantum mechanics considers the electron as both a particle and a wave.

Because of its wave nature, the electron does not move in a fixed orbit. We can only say that we are more likely to find an electron in some areas of space rather than others.

Thus, the electron moves in a cloud-like region around the nucleus.

We cannot say that the electron stays in one position, moves randomly, or moves along an orbital path at a fixed distance from the nucleus.

Answer:

C.

Explanation:

Quantum mechanics considers the electron as both a particle and a wave.

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