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Question: Answered & Verified by Expert
Which one of the following sets of quantum numbers represents the highest energy level in an atom?
ChemistryStructure of AtomKCETKCET 2011
Options:
  • A $n=4, l=0, m=0, s=+\frac{1}{2}$
  • B $n=3, l=1, m=1, s=+\frac{1}{2}$
  • C $n=3, l=2, m=-2, s=+\frac{1}{2}$
  • D $n=3, l=0, m=0, s=+\frac{1}{2}$
Solution:
1032 Upvotes Verified Answer
The correct answer is: $n=3, l=2, m=-2, s=+\frac{1}{2}$
For highest energy level in an atom, $(n+l)$ should be maximum.

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