The Most Useless Chemical Elements

2 / 5
2 / 5


Though not overly rare, with a prevalence similar to that of gold, silver, or cadmium, thulium is expensive to obtain. As new extraction methods become viable, costs may decrease. When that happens, thulium could function as a potential source of energy. For now, it's only used occasionally to manufacture lightweight, portable X-ray machines.

(Image: Element Images)

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