Astatine is a very rare radioactive chemical element with the chemical symbol At and atomic number 85. It occurs on Earth as the decay product of various heavier elements. All its isotopes are short-lived; the most stable is astatine-210, with a half-life of 8.1 hours.
At
210
6.35 g/L
610K
575K
Discovered by: Dale R. Corson
The Edu Periodic Table, also known as the periodic table of chemical elements, is an interactive and modern display of the chemical elements. It is widely used in chemistry, physics, and other sciences, and is generally seen as an icon of chemistry.
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