Actinium


 * Element Name:** Actinium


 * Element Symbol:** Ac


 * Atomic Mass:** 227[[image:Actinium.png width="216" height="288" align="right"]]


 * Atomic Number:** 89


 * Protons:** 89


 * Electrons:** 89


 * Discovery:** The element was first discovered by Andre-Louis Debierne in 1899, than independently by Friedrich Otto Giesel in 1902.


 * How it was named:** after the Greek word "aktinos" meaning "ray"


 * State of Matter:** solid


 * Melting Point:** 1050°C


 * Boiling Point:** 3198°C


 * Characteristics:** radioactive, silvery-white, metallic classification


 * Uses:** minimal commercial uses, thermoelectric power, source of neutrons, production of neutrons, and an agent for radiation therapy to target cancer cells


 * Interesting Facts:** It is categorized in the actinoid group. It is 150 times more radioactive than radium.

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