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Element 43 shouldn't be radioactive

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Radioactive elements are usually heavy, with high atomic weights. So why is the 43rd element in the periodic table radioactive? Find out here as we dive into the nuclear physics behind the periodic table.


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Research Paper:
https://www.osti.gov/pages/servlets/p...


Image credits:


Black periodic table:
https://upload.wikimedia.org/wikipedi...

Itub, CC BYSA 3.0, https://creativecommons.org/licenses/..., via Wikimedia Commons
https://commons.wikimedia.org/wiki/Fi...

Os Nrg level:
https://commons.wikimedia.org/wiki/Fi...

Fr Nrg level:
https://commons.wikimedia.org/wiki/Fi...

Bonding diagram:
https://commons.wikimedia.org/wiki/Fi...

Electrons and reactivity:
https://mammothmemory.net/chemistry/p...

Energy Levels of Nucleons in a SmoothlyVarying Potential Well:
https://www.flickr.com/photos/mitopen...

Empirical shell gap:
https://commons.wikimedia.org/wiki/Fi...

Shell model graphic:
https://commons.wikimedia.org/wiki/Fi...

Shells diagram:
https://commons.wikimedia.org/wiki/Fi...

Chart of nuclides:
https://www.flickr.com/photos/nsclmed...

Manhattan project Factory:
https://www.npca.org/articles/22pres...

Manhattan project test device:
https://lps.library.cmu.edu/ETHOS/art...

Mushroom cloud:
https://hti.osu.edu/historylessonpl...

Promethium isobar chart:
https://www.sciencedirect.com/topics/...

posted by appleerr21st