The spectrum of [Ni(H2O)6]2+ ( Figure 11.8 ) shows three principal absorption bands, wit...

The spectrum of [Ni(H₂O)₆]²⁺ ( Figure 11.8 ) shows three principal absorption bands, with two of the bands showing signs of further splitting. Referring to the Tanabe– Sugano diagram, estimate the value of Δ_o . Give a likely explanation for the further splitting of the spectrum.