Multiple Choice
How many electrons are present in a neutral atom of silicon (Si)?
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10. Periodic Properties of the Elements
The Electron Configuration
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following must occur for an electron to move to a higher energy level in an atom?
A
The electron must emit a photon.
B
The electron must increase its mass.
C
The electron must absorb energy.
D
The electron must lose energy.
Verified step by step guidance1
Understand that electrons in an atom occupy specific energy levels or orbitals, and moving between these levels involves changes in energy.
Recall that when an electron moves to a higher energy level, it must gain energy because higher energy levels correspond to higher potential energy states.
Recognize that energy transfer to an electron typically occurs through absorption of a photon, which provides the exact amount of energy needed for the electron to jump to the higher level.
Note that emitting a photon corresponds to an electron moving to a lower energy level, releasing energy in the process, so this is not the correct condition for moving up.
Conclude that the correct condition for an electron to move to a higher energy level is that it must absorb energy.
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