Dysprosium

= Dyspropsium=


 * Atomic Number:** 66


 * Protons:** 66


 * Electrons:** 66


 * Neutrons:**  97


 * Average Atomic Mass:** 162.5 amu


 * Isotopes:** Dy-152, Dy-153, Dy-154, Dy-155, Dy-156, Dy-157, Dy-158, Dy-159, Dy-160, Dy-161, Dy-162, Dy-163, Dy-164, Dy-165, Dy-166
 * Discovery:** Dysprosium was discovered by Paul Emile Lecoq de Boisbaudran in France in 1866. However, the element was not isolated into a pure state until the 1950s.
 * Name:** The name Dysprosium comes from the Greek word "dysprositos" meaning "hard to obtain".


 * Uses:** Used in nuclear fuel rods because it will help control the amount of energy released. Its also used in making lasers and compact disks (CDs). 

media type="youtube" key="hFfR_qOSa-8" height="344" width="425"
 * Video:**


 * Sources**
 * [|Dysprosium on WebElements]
 * [|Dysprosium History on WebElements]
 * [|Dysprosium Isotopes on WebElements]
 * [|Dysprosium on the Periodic Table of Videos on YouTube]
 * Photo: [|Nuclear de cofrentes by Tonyc on Flickr]