Actinium

= Actinium=


 * Atomic Number:** 89


 * Protons:** 89


 * Electrons:** 89


 * Neutrons:**  138


 * Average Atomic Mass:** 227


 * Isotopes:** Ac-224, Ac-225, Ac-226, Ac-227, Ac228, and Ac229


 * Discovery:** Andre Debierne in 1899, and F.Giesel in 1902 but using different techniques.


 * Name:** The name Actinium comes from the Greek word "//aktinos//" meaning "//ray//."


 * Uses:** Actinium is a source of thermoelectric power, as well as a source of neutrons


 * Interesting Facts**: Glows blue in the dark due to radioactivity and is more dangerous than plutonium.

media type="youtube" key="0BlpjWBYW0k" height="344" width="425" >
 * Video:**
 * Sources**
 * Photo: [|Trefoil by Beige Alert on Flickr].
 * Video: [|Actinium on the Periodic Table of Videos on YouTube.]
 * [|The History of Actinium on WebElements>]
 * [|Actinium Uses on WebElements]