Multiple Choice
Which of the following is the correct electron configuration for antimony (Sb)?
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10. Periodic Properties of the Elements
The Electron Configuration
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As an electron moves farther from the nucleus in an atom, how does its energy change?
A
The energy of the electron first increases, then decreases.
B
The energy of the electron remains constant.
C
The energy of the electron decreases.
D
The energy of the electron increases.
Verified step by step guidance1
Understand that the energy of an electron in an atom is related to its position relative to the nucleus, often described by energy levels or shells.
Recall that the energy of an electron in an atom is quantized and typically becomes less negative (increases) as the electron moves to higher energy levels farther from the nucleus.
Recognize that the lowest energy state (ground state) is closest to the nucleus, and as the electron moves away, it requires energy input, so its energy increases.
Use the concept of potential energy in the Coulombic attraction between the negatively charged electron and positively charged nucleus, where moving farther reduces the attraction and increases the electron's energy.
Conclude that as the electron moves farther from the nucleus, its energy increases, which aligns with the correct answer.
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