Two values of spin quantum number i.e., +1/2 and -1/2 represent

Options

A. (a) up and down spin of the electrons respectively
B. (b) two quantum mechanical spin states which refer to the orientation of spin of the electron
C. (c) clockwise and anti-clockwise spin of the electrons respectively
D. (d) anti-clockwise and clockwise spin of the electrons respectively.

Answer

B

Explanation

Spin angular momentum of the electron, a vector quantity can have two orientations relative to the chosen axis. These two orientations take the values of `+1//2` or `-1//2` and are called two spin states of the electrons.