A) 4, 1, 0 and \[\frac{1}{2}\]
B) 4, 0,1 and \[\frac{1}{2}\]
C) 4, 0, 0 and \[+\frac{1}{2}\]
D) 4, 1, 1, and \[\frac{1}{2}\]
Correct Answer: C
Solution :
Key Idea: Write the electronic configuration of potassium and then find quantum numbers of valence shell electron. \[K=19=1{{s}^{2}},2{{s}^{2}},2{{p}^{6}},3{{s}^{2}},3{{p}^{6}},4{{s}^{1}}\] \[\therefore \] Valence shell electron is 4s1 \[\therefore \] \[n=4\] \[l=0\] \[m=0\] \[s=\frac{1}{2}\]
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