Thallium - Tales from the Periodic Table
Thallium
Thulium is one of the Lanthanide, or "rare earth" series of elements. Aside from radioactive Promethium, it's the rarest of the rare ... Become a member of...
Thallium
A new video about the
Thulium is one of the Lanthanide, or "rare earth" series of elements. Aside from radioactive Promethium, it's the rarest of the rare ...
The 92nd element in the
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Poisonous
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The 84th element in the
Tantalum, the 73nd element in the
Lutetium is (thankfully) the last of the 15 lanthanide elements which we've spent the last year and three months exploring.
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Helium is the second element in the
Learn more at https://brilliant.org/TedEd -- Within the