Transition+Elements+by+Brenden,+Michal,+and+Caitlyn

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Group Project Here you will learn about the Transition Metals. The Transition Metals are in the middle of the Table. The reactivity level is not very high, it depends on the element that you choose on how high the reactivity level is. However over all its pretty low. Their natural state is a solid. For the electron dot diagram there isn't a specific diagram because of how many elements are in the group. Each one has a diffferent amount of electrons and some of the can even change their amount depending on the element that you group it with. Some interesting facts about the Transition Metals are 1. The Valence electrons are present in more than one shell 2. All elements are hard 3. All elements have high melting and boiling points 4. the Transition Metals include the Iron Triad and the Coinage Metals.

__Transition Metals__ The transition metals include:

**__Gold__ by Brenden Collins** Gold is element 79 and it's symbol is Au. It was named from old an old English word "geolo" meaning yellow. Who discovered and where they descoverd the element is unknown. Gold is very old it has been mentioned in the bible and used in Egyptian times.

Gold has many uses it is used in jewerly, coins, dentistry, medicine, industry, art, computers, electronics, award symbols, space, and glassmaking. Gold is used in cell phones, it is estimated that in every cell phone there is fifty cents worth of gold. The gold is in cell phones because it is a good conductor and it caries charges well.

__Properties:__
 * Melting Point 1064 C
 * Boiling Point 2856 C
 * Valence Number 1 or 3
 * Atomic Mass 197
 * Atomic Number 79

Manganese's atomic number is 25 with its symbol as Mn. It was dicovered by Johan Gottieb Gohn in 1774. Its atomic mass is 54.938.
 * __Manganese__ by Caitlin Manley **

Manganese is used in steel, batteries, axles, rail switches, ceramics, plows and safes. __Properties:__
 * Melting Point: 1246 C
 * Boiling Point: 2061 C
 * Valence Number: two
 * Atomic Mass: 54.938
 * Atomic Number: 25

Nickel by Michal McGrew
The element was named //kupfer-nickel// which means “ devil’s copper” because the miners who found it thought it was copper at first. Alex Cronstedt was the first to realize it was a new element but miners were the first to discover it. The element was discovered in 1751. In Earth’s crust there is 900 parts per million. In ocean water there are 2 parts per billion. Other places where large amounts are found is; Ontario, Canada, Australia, New Caledonia, Cuba, Indonesia, and Greenland. Some uses for Nickel are; electroplating metal alloys, nickel cadmium batteries, and it’s used to make stainless steel. Some interesting facts about nickel are that ; it was obtained from pentlandite, the lowest amount of electrons in nickel known so far is 56, the highest amount is 65, the half life of Ni 56 is 6.1 days, the half life of nickel 65 is 2.51 hours, there are 14 known isotopes of nickel, 5 stable, 9 unstable. __ Properties __ Atomic Number- 28 Atomic Mass- 58.6 Melting Point in Celsius- 1,555 Boiling Point in Celsius- 2,835 Valence Numbers- 2 and 3 Element Symbol - Nickel has 2 dots around it

Works Cited Barbalace, Kenneth. "Element Manganese - Mn." //Enviormental Chemistry//. N.p., 22 Feb. 2007. Web. 12 Apr. 2010. . Bentor, Yinon. "Transition Metals." //Chemical Elements//. N.p., 2009. Web. 12 Apr. 2010. . Gagnon, Steve. "The Element Manganese." //Jefferson Lab//. N.p., n.d. Web. 12 Apr. 2010. . Helmenstine, Anne Marie. "Nickel Facts." //About//. N.p., 2010. Web. 12 Apr. 2010. . - - -. "Transition Elements." //Www.About.com//. N.p., 2010. Web. 12 Apr. 2010. . "Nickle." //Chemistry Explained//. N.p., 2010. Web. 12 Apr. 2010. .

 The Many Uses of gold. N.p., 2005. Web. 9 Apr. 2010. < http://geology.com/minerals/gold/uses-of-gold.shtml >. Geographic News. N.p., 1996. Web. 9 Apr. 2010. < http://news.nationalgeographic.com/news/2002/09/0923_020923_wiregold.html >.