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Which three principles are used to determine the electron configuration of an atom?
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10. Periodic Properties of the Elements
The Electron Configuration
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In an atom, where are the lowest electron energy levels located?
A
Closest to the nucleus
B
Farthest from the nucleus
C
In the outermost shell
D
Between the nucleus and the outermost shell
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Understand that electron energy levels in an atom are quantized and are arranged in shells or energy levels around the nucleus.
Recall that electrons closer to the nucleus experience a stronger electrostatic attraction due to the positive charge of the nucleus, which lowers their potential energy.
Recognize that the lowest energy levels correspond to electrons that are closest to the nucleus because they are more tightly bound and have less energy compared to electrons farther away.
Note that electrons in outer shells have higher energy because they are less tightly bound and farther from the nucleus.
Conclude that the lowest electron energy levels are located closest to the nucleus.
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