= Total angular momentum quantum number
{wiki=Total_angular_momentum_quantum_number}
The total angular momentum quantum number, often denoted by \\( J \\), is a quantum number that characterizes the total angular momentum of a quantum system. In quantum mechanics, angular momentum is a combined measure of both the orbital angular momentum and the intrinsic angular momentum (or spin) of particles. The total angular momentum \\( J \\) can be both a result of the orbital angular momentum \\( L \\) and the spin angular momentum \\( S \\) of the particles in the system.
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