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xkcd #2913: Periodic Table Regions (imgs.xkcd.com)

submitted 7 months ago by [email protected] to c/[email protected]

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https://xkcd.com/2913

Alt text:

Cesium-133, let it be. Cesium-134, let it be even more.

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[–] [email protected] 17 points 7 months ago (1 children)

is only one of two radioactive elements that proceed non radioactive elements

… what’s the other one??

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[–] [email protected] 32 points 7 months ago (1 children)

Promethium #61 it is so rare that it really has no practical uses outside the lab. There is most likely less than a kilogram of the stuff in the entire planet.

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[–] [email protected] 12 points 7 months ago

And Kingpin stole it.

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