Question

Using a uv-vis such as this how would you determine the 10dq and b?

Answer 1

Orgel diagrams are useful for showing the energy levels of both high spin octahedral and tetrahedral transition metal ions. They ONLYshow the spin-allowed transitions. 

For complexes with D ground terms only one electronic transition is expected and the transition energy corresponds directly to Δ. Hence, the following high spin configurations are dealt with: d1, d4, d6 and d9.