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Question: The four quantum number for the valence shell electron or last electron of sodium (Z = 11) is...

The four quantum number for the valence shell electron or last electron of sodium (Z = 11) is

A

n=2,l=1,m=−1,s=−12n = 2,l = 1,m = - 1,s = - \frac{1}{2}

B

n=3,l=0,m=0,s=+12n = 3,l = 0,m = 0,s = + \frac{1}{2}

C

n=3,l=2,m=−2,s=−12n = 3,l = 2,m = - 2,s = - \frac{1}{2}

D

n=3,l=2,m=2,s=+12n = 3,l = 2,m = 2,s = + \frac{1}{2}

Answer

n=3,l=0,m=0,s=+12n = 3,l = 0,m = 0,s = + \frac{1}{2}

Explanation

Solution

Na11=2,8,1=1s2,2s22p6,3s1Na_{11} = 2,8,1 = 1s^{2},2s^{2}2p^{6},3s^{1}

n=3,l=0,m=0,s=+1/2n = 3,l = 0,m = 0,s = + 1/2