Identify the possible set of quantum numbers for outer shell electron

1.	Identify the possible set of quantum numbers for outer shell electron in element K.
Answer» `n=4,l=0,m=0 , s = PM 1/2` `n=4,l=1,m=1 , s = pm 1/2` `n=3,l=2,m=-1 , s = pm 1/2` `n=3,l=0,m=0 , s = pm 1/2` ANSWER :A

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