A) rotation of the electron in clockwise and anticlockwise direction respectively
B) rotation of the electron in anticlockwise and clockwise direction respectively
C) magnetic moment of the electron pointing up and down respectively
D) two quantum mechanical spin states which have no classical analogues
Correct Answer: A
Solution :
The quantum numbers \[+\frac{1}{2}\] and \[-\frac{1}{2}\] indicate the rotation of electrons around its axis in opposite directions. Hence, they represent the two quantum mechanical spin states which have no classical analogues.
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