The Magnitude of the Spin Angular Momentum for an Electron $\sqrt { 3 } \hbar$

Multiple Choice

The magnitude of the spin angular momentum for an electron is equal to

A) $\sqrt { 3 } \hbar$
B) $\frac { \sqrt { 3 } } { 2 } \hbar$
C) $\hbar$ /2.
D) $\hbar$ /2
E) $\frac { 3 } { 4 } \hbar$