Question

The quantum numbers $+\frac{1}{2}$ and $-\frac{1}{2}$ for the electron spin represent

• A. rotation of the electron in clockwise and anti-clockwise direction respectively
• B. rotation of the electron in anti-clockwise 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

Answer: (D)

$+\frac{1}{2}$ and $-\frac{1}{2}$just represents two quantum mechanical spin states which have no classical analogue.