Calculate CFSE for [FeF6]3-?

-12 Dq +24 Dq Zero None of these

Zero

In [FeF6]3-  x + 6(-1) = -3 x - 6 = -3 x = -3 + 6 = 3 Fe3+: [Ar]3d5 There is splitting of d-orbital in octahedral complex. (F- is a weak ligand) Configuration: t2g3eg2  So, CFSE = (-4 x 3)Dq + (+6 x 2)Dq = 0