Question

Based on the spectrochemical series, which should have the lowest energy maxima in the UV-Vis spectrum?

Answer 1

Im not sure of the question you asked but here is a help -

The metal ions can also be arranged in order of increasing Δ, and this order is largely independent of the identity of the ligand.^[4]

Mn²⁺ < Ni²⁺ < Co²⁺ < Fe²⁺ < V²⁺< Cu²⁺ < Fe³⁺ < Cr³⁺ < V³⁺ < Co³⁺

In general, it is not possible to say whether a given ligand will exert a strong field or a weak field on a given metal ion. However, when we consider the metal ion, the following two useful trends are observed:

• Δ increases with increasing oxidation number, and
• Δ increases down a group