Protactinium


 * Element Name:** Protactinium


 * Element Symbol:** PA


 * Atomic Mass:** 231[[image:Protactinium_Taylor.png width="216" height="288" align="right"]]


 * Atomic Number:** 91


 * Protons:** 91


 * Electrons:** 91


 * Discovery:** Kasimir Fajans and Oswald Helmuth discovered it in 1913.


 * How It Was Named:** Named from the Greek word "Protos," meaning the parent of actinium.


 * State of Matter:** Solid


 * Melting Point:** 1,568 °C


 * Boiling Point:** 4,027 °C


 * Characteristics:**
 * Metal
 * Silvery-Gray
 * Dense and Rigid


 * Uses of Elements:** No uses

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 * Interesting Facts:**
 * It's one of the rarest and expensivest elements.
 * It's used to provide Uranium