Technetium (tek-nee-shee-əm)

Technetium is the 43rd element on the Periodic Table. It has 43 protons and 55 neutrons. It also has 43 electrons on 5 energy levels. It is a Transition metal in the 7th family and on the 5th period. 

Name Orgins

The name Technetium means artificial. It comes from the Greek word technikos which means artificial. Originally, before the element was actually discovered, it was named Ekamanganese. It was named that because Mendeleev thought it would be similar to Managanese. 

Appearance 

Technetium is a silvery-grey metal. It has 43 protons situated on 5 different energy levels. There are 43 protons and 55 neutrons in the nucleus. 

In the Universe 

There is practically no Technetium on the Earth. none. It's artificially made and any that would have been here is long  gone. The only natural Technetium is found in stars. 

A New Element

Before it was officially discovered, Element 43 was falsely discovered many times. The most notable time was in 1925 in Germany. The three chemists discovered faint traces of the element when they bombarded Columbite with a beam of electrons (Parsons, Dixon 104). It was actually discovered in 1937 in Italy by Emilio Segré and Carlo Perrier. Now Technetium is found by the breakdown of Uranium ore. 

Uses

The isotope Technetium-99m is used to help detect cancer in x-rays. It bonds with the cancer cells to help detect them because of the Gamma Rays it emits (Parsons, Dixon 104). In Technetium-99m the electrons are able to stay in their excited state for abnormally long periods time (Technetium-99m radioactivity.eu.com).  Even though this isotope is radioactive, it doesn't harm the patient because the half-life is only 6 hours. It's long enough to scan the patient but not long enough to be harmful. 
Technetium star 

Extra: Fun Game Link

The author of this site did not create this game. Have fun ;) http://www.purposegames.com/game/elements-technetium-game
Picture
A Bohr model of Technetium

Works Cited 

​    "Major Groups of Elements: Transition Metals." The World Book Encyclopedia of Science. Chicago: World Book, 2000. 46. Print.
    Parsons, Paul, and Gail Dixon. "Technetium." The Periodic Table: A Visual Guide to the Elements. New York: Quercus, 2014. 104-05. Print.
    "Technetium." - Knowledge Encyclopedia. N.p., n.d. Web. 22 Oct. 2015.
    "Technetium Element Facts." Chemicool. N.p., n.d. Web. 22 Oct. 2015.
    "Technetium: Historical Information." Technetium»historical Information [WebElements Periodic Table]. N.p., n.d. Web. 22 Oct. 2015.
    "Technetium." The New Book of Popular Science. Danbury, CT: Grolier, 2006. 45. Print.
    "TECHNETIUM." Technetium, Chemical Element. N.p., n.d. Web. 22 Oct. 2015.