Which of the following pairs is not correctly matched?

• A
  Effective atomic number of $Pt$ in $[PtCl_6]^{2-} = 84$
• B
  Absorption peak for $[Cr^{III}(NH_3)_6]^{3+} = 21680 \ cm^{-1}$
• C
  Crystal field stabilization energy of $d^2$ in weak ligand field $= (-)0.8 \ \Delta_0$
• D
  Example of weak ligand field for $d^5$ configuration $= [Mn^{II}F_6]^{4-}$