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JIPMER 2012
Exam
JIPMER
Year
2012
Subject
Chemistry
Chapter
Structure of Atom

JIPMER 2012 · Chemistry · Structure of Atom

Which one of the following sets of quantum numbers represents the...

Which one of the following sets of quantum numbers represents the highest energy level in an atom?

Options

  1. An=4,l=0,m=0,s=+12n=4, l=0, m=0, s=+\frac{1}{2}
  2. Bn=3,l=1,m=1,s=+12n=3, l=1, m=1, s=+\frac{1}{2}
  3. Cn=3,l=2,m=−2,s=+12n=3, l=2, m=-2, s=+\frac{1}{2}
  4. Dn=3,l=0,m=0,s=+12n=3, l=0, m=0, s=+\frac{1}{2}

Correct answer

C. n=3,l=2,m=−2,s=+12n=3, l=2, m=-2, s=+\frac{1}{2}

Step-by-step solution

According to (n+l)(n+l) rule, the energy of an orbital depends upon the sum of the values of the principal quantum number (nn) and the azimuthal quantum number (ll). Lower the value of (n+l)(n+l), lower is the energy. If two different orbitals have the same value of (n+l)(n+l), the orbital with lower value of nn has lower energy.
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