Question

in which atom The outermost electrons can have the following set of quantum number n =3,l=0,m=0,s=-1/2
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Answer 1

Explanation:

For sodium atom: atomic number = 11

thus its electronic configuration: 1s

2

2s

2

2p

6

3s

1

Outer most electron is in 3s orbital and has quantum numbers as:

n=3,l=s=0,m

l

=0,m

s

=+1/2 or −1/2