2. In the wave-mechanical model of an atom, an orbital is defined as
(1) a region of the most probable neutron location
(2) a region of the most probable electron location
(3) the straight-line path of a neutron
(4) the straight-line path of an electron
Explanation: An orbital is defined as a region of the most probable electron location according to the wave-mechanical model of an atom. This is something you need to memorize in order to answer the question correctly.
Answer: 2
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