Explain briefly about spin quantum number

[prasanna]

1. This gives spin of the electrons about their own axes it is denoted by ms.
2. This quantum number refers to the two possible orientations of the spin of an electron, one clockwise and the other anti-clockwise spin.
3. These are represented by +1/2 and - 1/2.
4. If both are positive values, then the spins are parallel otherwise the spins are anti parallel.