= Spin quantum number
{wiki=Spin_quantum_number}
The spin quantum number is a fundamental quantum number that describes the intrinsic angular momentum (or "spin") of a particle, particularly in the context of quantum mechanics and atomic physics. It is denoted by the letter \\( s \\) or sometimes by \\( m_s \\) when referring to its projection along a specific axis (usually the z-axis). Key characteristics of the spin quantum number include: 1. **Values**: The spin quantum number can take on half-integer or integer values.
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