Question

33. The values of four quautum numbers of valence electron of an element are n 4,1-0,
m= 0 ands - 1/2. The element is
1)K
2) T1
3) Na
1) Sc​

Answer 1

K

option A is correct

The valence electron is in the 4s orbital since n=4,l=0,m=0,s=1/2​. Therefore, possible elements are K and C.

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