Question

The values \( +\frac{1}{2} \) and \( -\frac{1}{2} \) of spin quantum number show:

• A. rotation of electron clockwise and anti-clockwise directions respectively
• B. rotation of electron anti-clockwise and clockwise directions respectively
• C. rotation in any direction according to convention
• D. None of the above

Hint:

The spin quantum number of \( +\frac{1}{2} \) indicates clockwise rotation, and \( -\frac{1}{2} \) indicates anti-clockwise rotation.

Answer 1

The Correct Option is B

Step 1: Understanding spin quantum number.
The spin quantum number indicates the direction of the electron's spin. \( +\frac{1}{2} \) corresponds to a clockwise spin, and \( -\frac{1}{2} \) corresponds to an anti-clockwise spin.
Step 2: Explanation.
Thus, \( +\frac{1}{2} \) and \( -\frac{1}{2} \) represent the clockwise and anti-clockwise directions of the electron's spin, respectively.
Final Answer: \[ \boxed{\text{B) rotation of electron anti-clockwise and clockwise directions respectively}} \]