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![](../graphic/atpt.jpg) |
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Discovered : 1940 by D.R.Corson
Isolated in California, USA
Origin : From the Greek astatos meaning unstable.
Description :
A dangerously radioactive element made in nuclear reactors, its half life is only eight hours.
Image :
Unstable and radioactive. |
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![](../graphic/at.gif) |
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