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Solution


Q.

The four quantum numbers for the electron in the outer most orbital of potassium (atomic no. 19) are           [2024]
1 n=4,l=0,m=0,s=+12  
2 n=2,l=0,m=0,s=+12  
3 n=4,l=2,m=-1,s=+12  
4 n=3,l=0,m=1,s=+12  

Ans.

(1)             

                  K19=[Ar]418  s1

                   The four quantum numbers of outermost orbital electron are:

                   n=4,l=0(s subshell),m=0(s orbital),s=+12 or -12