= Molar magnetic susceptibility
{title2=$\chi_{\rm mol}$}
The product $\chi_{\rm mol}=V_m\chi_v$ of <volume magnetic susceptibility> and molar volume. In SI it has units $\mathrm{m^3\,mol^{-1}}$. For one localized magnetic <ion> per formula unit, its <Curie–Weiss law> is $\chi_{\rm mol}=C_{\rm mol}/(T-\Theta)$, with $C_{\rm mol}=\mu_0N_A\mu_{\rm eff}^2/(3k_B)$. Normalization per mole of formula units and per mole of magnetic <ions> differ when there is more than one such <ion> per formula unit.
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