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the collection is safe to handle and store
decoration
californium can be used to help start up nuclear reactors
Antarctica Petrified Wood
The display incorporates aspects of our previous projects and follows the same STEM theme that we all love
Astatine Cube Element Sample Historical Artifacts the collection is safe toAstatine's atomic number is 85 and its symbol is At. It is the rarest naturally occurring element in the Earth's crust, occurring only as the decay product of various heavier elements. All of the astatine's isotopes are short lived; the most stable is astatine 210, with a half life of 8. 1 hours. A sample of the pure element has never been assembled, because any macroscopic specimen would be immediately vaporized by the heat of its own radioactivity.
