Which statement refers to the quantum mechanical model? A) Electrons move in a circular path about the nucleus. B) Electrons can lose energy and fall into the nucleus. C) Electrons are in "orbitals", regions of space where there is high probability of being found. D) An electron can move from one circular path to another only when it absorbs or emits energy corresponding to the exact difference between the two energy states.

Electrons are in "orbitals", regions of space where there is high probability of being found.

Explanation:

The Wave mechanical model of the atom does not restrict the electrons to certain energy levels only as in the Bohr's model, instead it describes a region around the nucleus called an orbital, where there is a high probability of finding an electron with a certain amount of energy.

Each energy level is composed of one or more orbitals and the distribution of electrons around the nucleus is determined by the number and kind of energy levels that are occupied.

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