Multiple Choice
In an atom, where are the electrons that are primarily involved in chemical bonding located?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In an atom, which group of electrons typically have the same amount of energy?
A
Electrons within the same principal energy level (shell)
B
Electrons in different subshells of the same shell
C
Electrons in the same atom but different energy levels
D
Electrons in the same orbital but different atoms
Verified step by step guidance1
Understand that electrons in an atom are arranged in energy levels called principal energy levels or shells, denoted by the principal quantum number $n$.
Recognize that within each principal energy level, there are subshells (s, p, d, f) that have slightly different energies, so electrons in different subshells of the same shell do not have exactly the same energy.
Recall that electrons in different principal energy levels (different $n$ values) have different energies, with higher $n$ corresponding to higher energy.
Note that electrons in the same orbital (same spatial region) but in different atoms are not comparable in terms of energy within a single atom, since the question focuses on electrons within one atom.
Conclude that the group of electrons that typically have the same amount of energy are those within the same principal energy level (shell), because they share the same principal quantum number $n$ and thus have similar energy.
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