The number of paramagnetic complexes among [ FeF_6]^3-,[ Fe ( CN )_6]^3-,[ Mn ( CN )_6]^3-, [ Co ( C_2 O_4)_3]^3-,[ MnCl_6]^3-, and [ CoF_6]^3-,…

The number of paramagnetic complexes among $\displaystyle \left[\mathrm{FeF}_6\right]^{3-},\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}$, $\displaystyle \left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-},\left[\mathrm{MnCl}_6\right]^{3-}$, and $\displaystyle \left[\mathrm{CoF}_6\right]^{3-}$, which involved $\displaystyle \mathrm{d}^2 \mathrm{sp}^3$ hybridization is $\displaystyle \_\_\_\_$