Spin Quantum Number
### Formula:
$$m_s=+\frac{1}{2},-\frac{1}{2}$$
### Terminologies:
- m_s β Spin quantum number; represents spin direction of electron.
- +1/2 β Clockwise spin.
- β1/2 β Anticlockwise spin.
### Usage:
- Used to represent spin state of electrons.