85Astato – AstatineMass: 210 u[Xe] 4f145d106s26p5Melting point: 575 KBoiling point: 610 KDensity: kg/m3Discovery: Dale R.C...
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Astato

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Astato

  1. 1. 85Astato – AstatineMass: 210 u[Xe] 4f145d106s26p5Melting point: 575 KBoiling point: 610 KDensity: kg/m3Discovery: Dale R.Corson, Kenneth Ross MacKenzie, Emilio Segrè (1940)Astatine is a radioactive chemical element. It occurs onEarth only as the result of the radioactive decay of certainheavier elements. All of its isotopes are short-lived; the moststable is astatine-210. The observed properties are consistentwith it being a heavier analog of iodine.

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