${\left[{\mathrm{RhF}}_6\right]}^{3-}$complex ion is 

${\left[{\mathrm{RhF}}_6\right]}^{-3} {\mathrm{Rh}}^{+3}= \left[\mathrm{Xe}\right] 6{\mathrm{s}}^0 5{\mathrm{d}}^6$

$\mathrm{F}$ is act as $\mathrm{S}.\mathrm{F}.\mathrm{L}$ for $5\mathrm{d}$ series ${\mathrm{Rh}}^{+3}$

Hybridisation is ${\mathrm{d}}^2{\mathrm{sp}}^3$ (inner orbital complex)

It is Homoleptic complex.