Multiple Choice
Which of the following sets of numbers could be used to designate the principal energy levels (shells) in an atom?
A) -1, 0, 1, 2, and 3
B) 0, 1, 2, 3, and 4
C) 1, 2, 3, 4, and 5
D) all of these
Correct Answer:

Verified
Correct Answer:
Verified
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