What Is the Spectrochemical Series?

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The spectrochemical series is basically two lists that are both really important to know. Find out about the spectrochemical series with help from a chemistry professional in this free video clip.

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Video Transcript

Hi, I'm Robin Higgins, and this is "what is the spectrochemical series?" Okay, so, the spectrochemical, the spectrochemical series is basically two lists. It's a list of ligands and a list of metals, and they're based, they're arranged from weakest to strongest. And, for the metals, they're arranged by oxidation number and by group. And, so the ligands on the left hand side are the weak ligands because forcible pairing at the 3D electron level, and so they form outer orbital octahedral complexes, versus the ones on the right hand side that are stronger. The strong ones, they form inner orbital octahedral complexes. And, there's no real way to predict the ligand strengths, they've been tested experimentally. And, it's worth noting that both the ligand and the metals, there's tons more that I didn't include, just for a space, so you can look up online, a complete list of a ligands. And, the metals are ordered in increasing oxidation number, and also down a group. So, spectrochemical series, basically a list of ligands from weak to strong, and a list of metals in increasing oxidation number. Hi, I'm Robin Higgins, and this is "what is the spectrochemical series?"


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