Comments by "" (@Gameboygenius) on "China‘s Iron Grip on the Rare Earth Magnet" video.

  1. Yttrium, terbium and erbium are cemented in my mind, but sometimes I lose track of whether 3 or 4 elements were named after the Ytterby mine. And so I have to remind myself whether Ytterbium is an element or made up in my mind to fill in the pattern.
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