Bohr quantization of angular momentum (L = nh/(2π) = nℏ)

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L = nh/(2π) = nℏ

What each symbol means

SymbolWhat it stands for
LMagnitude of electron angular momentum (J·s)
hPlanck constant
nPrincipal quantum number (1,2,…)
ħh/(2π)

When to use this

Circular orbit Bohr model; quantum picture uses operators.