Estimate the spin-only contribution to the magnetic moment for each complex in Exercise 20.1.

Data from Exercises 20.1

Determine the configuration (in the form t_2g^x e_g^y or e^xt₂^y , as appropriate), the number of unpaired electrons, and the ligandfield stabilization energy in terms of Δ_O or Δ_T and P for each of the following complexes. Use the spectrochemical series to decide, where relevant, which are likely to be high-spin and which low-spin.

[Co(NH₃)₆]³⁺, 

[Fe(OH₂)₆]²⁺, 

[Fe(CN)₆]³⁻, 

[Cr(NH₃)₆]³⁺,

[W(CO)₆], 

Tetrahedral [FeCl₄]²⁻, 

Tetrahedral [NiCl₄]²⁻.