Multiple Choice
Which of the following shows the correct electron configuration for 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
How does the energy of an electron change when the electron moves closer to the nucleus?
A
The energy increases (becomes more positive).
B
The energy first increases, then decreases.
C
The energy decreases (becomes more negative).
D
The energy remains the same.
Verified step by step guidance1
Understand that the energy of an electron in an atom is related to its position relative to the nucleus, specifically its distance from the nucleus.
Recall that the potential energy of an electron in the electric field of the nucleus is negative because the electron is attracted to the positively charged nucleus.
Recognize that as the electron moves closer to the nucleus, the magnitude of this negative potential energy increases, meaning the energy becomes more negative.
Know that a more negative energy corresponds to a lower energy state, which is more stable for the electron.
Therefore, when the electron moves closer to the nucleus, its energy decreases (becomes more negative), indicating it is in a more stable, lower energy state.
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