4.8 • 1.8K Ratings
🗓️ 23 October 2023
⏱️ 12 minutes
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0:00.0 | The following is an encore presentation of everything everywhere daily. |
0:04.0 | In 1939, the last naturally occurring element on Earth, Francium, was discovered. |
0:12.0 | However, the periodic table of the elements |
0:14.4 | still wasn't full. The next year, a non-natural element was discovered, plutonium. This new |
0:20.3 | element had fascinating properties which made it incredibly useful and incredibly dangerous. |
0:25.0 | Learn more about plutonium, how it's made and what it can do on this episode of Everything Everywhere Daily. Really. To start a discussion of plutonium we might as well start with what it is and where it comes from |
0:49.9 | plutonium has the atomic number 94 which means it has 94 protons. |
0:54.0 | Its discovery is credited to Nobel Laureate Glenn Seaborg who discovered 10 different elements on the periodic table. |
1:00.0 | If you remember back to my episode on the element uranium, which is element 92, it was given its name from the then newly discovered planet Uranus. |
1:08.5 | Excuse me, Uranus. |
1:10.5 | Just months before the discovery of plutonium in 1940, element 93 was discovered by |
1:15.2 | bombarding uranium with a cyclotron and it was called Neptuneium the next |
1:19.8 | planet after Uranus. Excuse me, Uranus. |
1:23.0 | Then later that year, |
1:25.0 | Seaborgena's group at the University of California Berkeley |
1:27.0 | bombarded Uranium with Duturium, a hydrogen isotope, |
1:30.0 | which created element 94, |
1:32.0 | and it was named after the planet after Neptune or at least it was at that time |
1:36.2 | Pluto only a few atoms of it were actually ever initially created the abbreviation for plutonium is PU even though it really should be |
1:45.3 | P.L. and there are no other elements with P.L. as an abbreviation. |
1:49.8 | Seaborg thought it would be funny to call it P u and the abbreviation stuck as I mentioned in the |
1:55.3 | introduction plutonium isn't considered to be a naturally occurring element |
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