The most dangerous elements on the periodic table - Shannon Odell

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Within the periodic table loom many potential hazardous elements. Some elements are dangerous due to their toxicity. Others are dangerous because of how they respond, react, or even explode in the outside environment. And perhaps the most threatening elements are those that silently emit energy. So, which substances on the periodic table are the most dangerous? Shannon Odell investigates.

Lesson by Shannon Odell, directed by Anton Bogaty.

This video made possible in collaboration with Brilliant

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Thank you so much to our patrons for your support! Without you this video would not be possible! Kack-Kyun Kim, Michael Braun-Boghos, zjweele13, Anna-Pitschna Kunz, Edla Paniguel, Thomas Mungavan, Jaron Blackburn, Venkat Venkatakrishnan, ReuniteKorea, Aaron Henson, Rohan Gupta, Begum Tutuncu, Brian Richards, Jørgen Østerpart, Tyron Jung, Carsten Tobehn, Katie Dean, Ezgi Yersu, Gerald Onyango, alessandra tasso, Doreen Reynolds-Consolati, Manognya Chakrapani, Ayala Ron, Eunsun Kim, Phyllis Dubrow, Ophelia Gibson Best, Paul Schneider, Joichiro Yamada, Henrique Cassús, Karthik Cherala, Clarence E. Harper Jr., Vignan Velivela, Ana Maria, Exal Enrique Cisneros Tuch, Tejas Dc, Khalifa Alhulail, Martin Stephen, Jose Henrique Leopoldo e Silva, Mandeep Singh, Abhijit Kiran Valluri, Morgan Williams, Devin Harris, Pavel Zalevskiy, Karen Goepen-Wee, Filip Dabrowski, Barbara Smalley, Megan Douglas, Tim Leistikow, Ka-Hei Law and Hiroshi Uchiyama.

[derkaiser]

The Periodic Table is definitely one of the most important inventions in modern science. They way it is set up, how easy it is to understand, and the information it displays readily is genius. It is also one of the only inventions that shows us what we are missing which means we can never stop searching for new elements.

[augustinesim]

it is important to mention that alpha particles are easily blocked by a paper sheet while beta requires more protection and gama only by concrete and lead

[MwelwaOnCos]

Thank you for giving us possibly dangerous information

[Electroblade]

0:53
Fact of the day! This periodic table is pretty outdated (not really). Elements Uut, Uup, Uus, and Uuo have now been known as Nihonium (Nh), Moscovium (Mc), Tenessine (Ts) and Oganesson (Og)








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[Dheeraj]

One thing to note is that humans are the ones who made such discoveries, and some of them became too deadly for human society.

[wachulookingat]

1. Thallium
2. Lead
3. Mercury
4. Cesium
5. Francium
6. Polonium

[russelmalik]

Thanks I really needed this for my landlord😊

[kirukiru]

The rats high-fiving each other at the end was funny 😂😂

[MisterVercetti]

I've always found Technetium and Promethium particularly fascinating. They're like the Missingnos of the chemical elements - atomic physics dictate that they should exist naturally, yet they've never been found, and trying to reproduce them has typically undesirable results. It's almost like a couple of elements were just "deleted", if such a thing were possible, and what humans have managed to create are more or less their glitchy remains.

[Abhay]

Now that's the kind of videos I love watching while having dinner 😁

[ptat_Child]

The fact that the way these videos are made, you learn way more than you would have at a public school. Good Stuff

[Infiniqii]

Ted Ed can teach me more in 4 minutes than any school

[Sillesiann]

It's Marie SKLODOWSKA-Curie, use her proper name like she would have wanted

[rocknrollmanic]

Hello student of science here. I've been told that Francium is not as reactive as Cesium due to quantum effects pulling the valence electrons closer. I was also told Bismuth is stable with a half life equal to more than the age of the universe. I was hoping to see you research or source on this

[athayawafiandaka]

Watching this reminds me of Marie Curie 😢😢😢

[BlackStallionStudios]

Just a note: please don’t represent atoms or ions as a cluster of particles because then they are easy to confuse with molecules. This is obviously unless you’re talking of protons, neutrons and electrons. Otherwise,
Great work!

[yumibro]

I love this artist. I feel like their work improves with every video they do for you. Thanks for the amazing content!

[descentium]

I'm surprised Radon wasn't given a special mention here. A lot of the radioactive elements (Particularly Francium and Astatine) are too rare to pose as a health risk naturally but Radon is very much a problem as a radioactive gas.

[ffcac]

2:30 Francium is not likely the most reactive alkali metal owing to relativistic effects.

[ankurchauhan]

What about Beryllium? It is considered one of the most toxic non radioactive elements by some agencies.