Question

The quantum numbers + 1/2 and -1/2 for the electron spin represent

(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 analogue .

Answer 1

Correct option (d) two quantum mechanical spin states which have no classical analogue .

Explanation:

Plus and minus signs only indicate the rotation of electrons around its axis in opposite directions. Hence, two quantum mechanical spin states which have no classical analogue.