Easy
The four quantum numbers for the valence shell electron of Sodium $(Z=11)$ are:
- A$n=2, \ell=1, m=-1, s=-\frac{1}{2}$
- B$n=3, \ell=0, m=0, s=+\frac{1}{2}$
- C$n=3, \ell=2, m=-2, s=-\frac{1}{2}$
- D$n=3, \ell=2, m=2, s=+\frac{1}{2}$
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