MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryAtomic StructureIntro

[CBSE AIPMT 2009] Which of the following is NOT a permissible arrangement of electrons in an atom?

0.n=3, l=2, m=−3, s=−1/2

1.n=5, l=3, m=0, s=+1/2

2.n=4, l=0, m=0, s=−1/2

3.n=3, l=2, m=−2, s=−1/2

Explanation

For l=2, m can only be −2, −1, 0, +1, +2. So m=−3 is NOT permissible when l=2.

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