Dipole moment (point-charge model) (μ = q × d (vector from − to + in chemistry convention))

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μ = q × d (vector from − to + in chemistry convention)

What each symbol means

SymbolWhat it stands for
dSeparation of charge centers (m)
qMagnitude of partial charge (C)
\muDipole moment; 1 D ≈ 3.336×10⁻³⁰ C·m

When to use this

Gas-phase diatomic approximation; % ionic character compares μ_obs to μ_100% ionic.