ચુંબકીય ચાક્મત્રા $ = \,\sqrt {n\,\left( {n\,\, + \;\,2} \right)} \,\, = \,\,\sqrt {\left( {2\,\, \times \,\,4} \right)} \,\, = \,\,2.84\,\,B.M$
$\mathrm{Eu}, \mathrm{Cm}, \mathrm{Er}, \mathrm{Tb}, \mathrm{Yb}$ અને $\mathrm{Lu}$