Using the following abbreviated spectrochemical series, determine which complex ion is most likely to absorb light in the red region of the visible spectrum. small splitting cl- < h2o < nh3 < cn- large splitting using the following abbreviated spectrochemical series, determine which complex ion is most likely to absorb light in the red region of the visible spectrum. small splitting cl- < h2o < nh3 < cn- large splitting [cu(nh3)4]2 [cucl4]2- [cu(cn)4]2- [cu(h2o)4]2 not enough information given to determine