Ethylenediamine magnetic behavior

Analyze We are given the color and magnetic behavior of an octahedral complex containing Co with a -I-3 oxidation number. We need to use this information to determine its electron configuration, its spin state (low-spin or high-spin), and the color of light it absorbs. In part (d), we must use the spectrochemical series to predict how its properties will change if NH3 is replaced by ethylenediamine (en). 

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