Multiple Choice
Which of the following best describes a cathode ray?
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10. Periodic Properties of the Elements
The Electron Configuration
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Which statement best describes electron energy levels and their location in an atom?
A
Electron energy levels are located inside the nucleus and contain protons and neutrons.
B
Electron energy levels are the same as the atomic mass of an element.
C
Electron energy levels are specific regions around the nucleus where electrons are likely to be found.
D
Electron energy levels refer to the number of neutrons in an atom.
Verified step by step guidance1
Understand that electron energy levels, also called electron shells or orbitals, are regions around the nucleus of an atom where electrons are most likely to be found.
Recall that the nucleus contains protons and neutrons, not electrons, so electron energy levels are not located inside the nucleus.
Recognize that atomic mass is related to the total number of protons and neutrons in the nucleus, and is not the same as electron energy levels.
Know that neutrons are neutral particles in the nucleus and do not define electron energy levels.
Conclude that the correct description is that electron energy levels are specific regions around the nucleus where electrons are likely to be found.
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