which of the following reasons correctly explains the color changes that take place when 8 ml of the 10% h2o2 is added to the solution of dichlorobis(ethylenediamine)cobalt(ii)? the ethylenediamine ligands surrounding the cobalt metal center are being replaced by peroxide ligands which results in a different crystal field splitting. thus, the energy associated with electron transitions between the d-orbitals will differ for the two compounds showing a color change. the ethylenediamine ligands are oxidized which results in a different crystal field splitting. thus, the energy associated with electron transitions between the d-orbitals will differ for the two compounds showing a color change. the cobalt(ii) metal ion center is oxidized to a cobalt(iii) metal ion center which results in a different crystal field splitting. thus, the energy associated with electron transitions between the d-orbitals will differ for the two compounds showing a color change. the cobalt(ii) metal ion center is reduced to a cobalt(i) metal ion center which results in a different crystal field splitting. thus, the energy associated with electron transitions between the d-orbitals will differ for the two compounds showing a color change.