Multiple Choice
Which of the following is the correct ground-state electron configuration for manganese (Mn)?
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10. Periodic Properties of the Elements
The Electron Configuration
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Which of the following statements about the energy levels of electrons in shells is correct?
A
Electrons in shells farther from the nucleus have higher energy than those closer to the nucleus.
B
Electrons in shells closer to the nucleus have higher energy than those farther away.
C
All electron shells have the same energy.
D
The energy of electrons in a shell does not depend on their distance from the nucleus.
Verified step by step guidance1
Understand that electrons in an atom occupy energy levels or shells, which are quantized regions around the nucleus where electrons are likely to be found.
Recall that the energy of an electron in an atom depends on its distance from the nucleus: electrons closer to the nucleus are more strongly attracted and thus have lower energy (more stable), while electrons farther away have higher energy.
Recognize that the energy levels increase as the principal quantum number $n$ increases, where $n=1$ is the closest shell to the nucleus with the lowest energy, and higher $n$ values correspond to shells farther away with higher energy.
Evaluate the given statements by comparing them to this concept: the correct statement should reflect that electrons in shells farther from the nucleus have higher energy than those closer to the nucleus.
Conclude that the correct statement is: 'Electrons in shells farther from the nucleus have higher energy than those closer to the nucleus.'
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