Which of the following pairs is not correctly matched?

• A

  Effective atomic number of Pt in ${\left[{\mathrm{PtCl}}_6\right]}^{2-}=84$

• B

  $\text{ Absorption peak for }{\left[{\mathrm{Cr}}^{\mathrm{III}}{\left({\mathrm{NH}}_3\right)}_6\right]}^{+3}=21680{\mathrm{cm}}^{-1}$

• C

  Crystal field stabilization energy of d² in weak ligand field = (-)0.8 ${\mathrm{\Delta }}_{\mathrm{o}}$

• D

  Example of weak ligand field for d⁵ configuration $={\left[{\mathrm{Mn}}^{\mathrm{II}}{\mathrm{F}}_6\right]}^{-4}$