Astatine




 * Element Name:** Astatine


 * Element Symbol:** At


 * Atomic Mass:** 210[[image:Astatine_Nathan.png width="216" height="288" align="right"]]


 * Atomic Number:** 85


 * Protons:** 85


 * Electrons:** 85


 * Discovery:** Dale R. Corson, Kenneth Ross Mackenzie, and Emily Segre in 1940.


 * How it was named:** After Geek atatos meaning "unstable".


 * State of Matter:** Solid


 * Melting Point:** 302°C


 * Boiling Point:** 337°C


 * Characteristics:**
 * Metallic
 * Highly Radioactive
 * Black Solid
 * Made Naturally
 * Uses of Element:** Used as a alpha-particle emitter in space.
 * Interesting Facts:**

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 * Rarest naturally occurring element known.
 * Astatine is created in a natural decaying process of chemicals.
 * Not much is known about Astatine due to its short life.