MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryAtomic StructureIntro
The correct set of four quantum numbers for the valence electron of rubidium (Z = 37) is
0.n=5, l=1, m=0, s=+1/2
1.n=5, l=1, m=1, s=−1/2
2.n=5, l=0, m=1, s=−1/2
3.n=5, l=0, m=0, s=+1/2
Explanation
Rb (Z=37): [Kr] 5s¹. Valence electron is in 5s¹: n=5, l=0 (s orbital), m=0, s=+1/2.
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