Platinum By: Maghen Warren

About Platinum! Symbol: Pt Atomic number: 78 Atomic mass: 195.078 amu Boiling point: 3827.C Melting point:1772.C Denisty: 21.45 g/cm3 Most abundant physical state: solid # Of protons: 78 # Of electrons: 78 # Of neutrons: 117 # Of valence electrons:6

More! Electron Configeration 1s22s2p63s2p6d104s2p6d 104s2p6d10f145s2p6d9d96s1 Element group: 10 Element period: 6 Element’s usual charge: 2+

Facts The color is a silver like white. There is no odor to it. Mostly non toxic. Common isotopes: 78.

It’s Discovery Discovered by Julius Scalger Discovered in 1735 Got its name from the word “platinum which means little silver.

Abundant Most abundant is platinum 194, which makes up 33% of platinum. Platinum 195 and 196 are also common. Platinum 198, 192, and190 are the rarest.

Where Does It Come From? Found in ultrabasic rocks. In the Earth’s mantle.

What Is It Used for? To make jewelry In dental crowns To make crucibles Combined with cobalt to make very strong magnets

Interesting Facts! Hardness: 3.5 mohs Japanese buy 85% of the world’s platinum jewelry each year.  Only about 133 tons of Platinum are mined annually Very heavy, but soft Rarest of the precious metals Approximately 10 tons of raw ore must be mined to produce just one pure ounce of platinum

-Work Cited Platinum." Facts About Everything! Arts, Literature, Science, History, Events, Entertainment, People, Places and the Natural World. Web. 24 May 2010 .<http://www.facts-about.org.uk/science-element-platinum.htm> Bentor, Yinon. Chemical Element.com - Platinum. May 24, 2010 <http://www.chemicalelements.com/elements/pt.html>. Gagnon, Steve. "It's Elemental - The Element Platinum." Science Education at Jefferson Lab. Web. 27 May 2010. <http://education.jlab.org/itselemental/ele078.html>.