Mitch+C+-+Actinium

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Atomic Number: 89 Atomic Weight:** 227
 * Name: Actinium
 * Symbol:** Ac
 * State At Room Temperature:** Solid

//Actinium// is a radioactive chemical element with the symbol **Ac** and atomic number 89. It was discovered in 1889. The word //actinium// comes from the greek word/s, aktis, aktinos, meaning beam or ray. //Actinium// is a silvery, radioactive, metallic element. Due to its intense radioactivity //actinium// glows in the dark with a pale blue light. //Actinium// is exetremely radioactive and its potential for radiation induced health effects is even more dangerous than plutonium. Ingesting even small amounts of //actinium// is fatal. (http://en.wikipedia.org/wiki/Actinium)

//Actinium's// elemental classification is metal and it belongs to the actinide group. At room temperature //actinium// is a solid. It melts at 1324 K (or 1051 C) and boils at 3471 K (or 3198 C). (http://education.jlab.org/itselemental/ele089.html)

//Actinium// is known to portray similar chemical behaviour to that of the rare earth element, lanthanum. In industrial application, //actinium// is used as a valuable neutron source. It is also used as a source of thermoelectric power in different applications. (http://www.about-the-element.com/89-the-element-actinium.html)

//Actinium// is found only in traces in uranium ores, one ton of uranium ore contains about a tenth of a gram of //actinium.// But is // more commonly made in milligrams by the neutron irradiation of 226Ra in a nuclear reactor. Actinium is about 150 times as radioactive as radium making it a valuable neutron source. Otherwise it has no significant industrial applications. (http://wiki.answers.com/Q/Tell_you_all_about_actinium)

Actinium// costs $100 per gram. ([])

For info on neutron energy click the link below. http://en.wikipedia.org/wiki/Neutron_energy

For info on radium click the link below. http://en.wikipedia.org/wiki/Radium