A) \[4,\,\,1,\,\,0,\,\,\frac{1}{2}\]
B) \[3,\,\,1,\,\,0,\,\,\frac{1}{2}\]
C) \[4,\,\,0,\,\,0,\,\,\frac{1}{2}\]
D) \[3,\,\,0,\,\,0,\,\,\frac{1}{2}\]
Correct Answer: C
Solution :
\[K(19):\,\,1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{6}},\,\,3{{s}^{2}}3{{p}^{6}},\,\,4{{s}^{1}}\] \[4{{s}^{1}}\]is the valence electron in potassium, hence the correct set of four quantum numbers for outermost electron is\[4,\,\,0,\,\,0,\,\,\frac{1}{2}\].
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