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The compound Na2[Co(SCN)4] is to have a electronic spectrum is to have 3 peaks but only 2 show , where would the other peak be
Accepted Answer
The missing peak in the electronic spectrum of Na2[Co(SCN)4] is likely due to a transition that is either forbidden or very weak. The most common reason for a missing peak is a spin-forbidden transition. This occurs when the transition involves a change in spin multiplicity, which is not allowed by the selection rules for electronic transitions. Another possibility is that the transition is simply too weak to be observed, possibly due to a small molar absorptivity or overlap with other peaks.
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