A) \[n=1,l=0,\,{{m}_{l}}=0,{{m}_{s}}=-\frac{1}{2}\]
B) \[n=1,l=1,\,{{m}_{l}}=0,{{m}_{s}}=+\frac{1}{2}\]
C) \[n=2,l=1,\,{{m}_{l}}=0,{{m}_{s}}=+\frac{1}{2}\]
D) \[n=3,l=1,\,{{m}_{l}}=0,{{m}_{s}}=+\frac{1}{2}\]
Correct Answer: B
Solution :
\[n=1,\,l=0,\,m=0\,{{m}_{s}}=-\frac{1}{2}\] all the values are according to the rules. \[n=1,\,l=1,\,{{m}_{1}}=0,\,{{m}_{s}}=-\frac{1}{2}\therefore \] The value of can have maximum (n - 1) value i.e. 0 (zero) in this case. This set of quantum numbers is not possible. \[n=2,\,l=1,\,{{m}_{l}}=0,\,{{m}_{s}}=+1/2\,;\] All the values according to rules \[n=3,\,l=1,\,{{m}_{l}}=0,\,{{m}_{s}}=+1/2\,;\] All the values according to rules.
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