\(F{e^{2 + }}\, \to \,3{d^6}\) \(F{e^{2 + }}\, \to \,3{d^6}\)
\(t_{2g}^6\,e{g^0}\) \(t_{2g}^4\,e{g^2}\)
\(\mu \, = \,\sqrt {n(n + 2)} \) \(\mu \, = \,\sqrt {n(n + 2)} \,=\,\sqrt {24}\)
\(\mu \, =0\) \(\mu \, = \,4.9\,BM\)