Periodic ir RESEARCH
Element Selected: Iridium
Why did you select this element?
I'm not exactly sure why, I've heard it can be found in astroids. So I thought It would be pretty cool to chose the element.
Basic Info:
- Element Name: Iridium
- Element Symbol: Ir
- Atomic Number: 77
- Atomic Mass: 192
- Element Classification (metal, nonmetal, gas): Metal
- Period: 6
- Group: 9
- Density: 22.42
- Atomic Radius: 136
- Melting Point: 2719 K
- Boiling Point: 4701 K
- Electronegativity: 2.2
- Electron Configuration: Xe 4f14 5d7 6s2
- Number of Stable Isotopes (if any):
- What does the name mean? (usually in Greek): Named after Iris the greek god of rainbows.
Source 1 Title: Iridium Element Information
MLA Citation: "Iridium." - Element Information, Properties and Uses. N.p., n.d. Web. 16 Sept. 2014.
History Facts: Discovered with osmium.
Uses Facts: Forms and alloy with osmium that is used in certain pen tips and compass bearings.
Properties Facts:
Source 2 Title: Iridium element facts.
MLA Citation:"Iridium Element Facts." Chemicool. N.p., n.d. Web. 16 Sept. 2014.
History Facts: Discovered in 1803. They found iridium residue after dissolving platinum.
Uses Facts: Used in making crucibles, Radiation treatment for cancer. It is used for heavy duty electrical contacts.
Properties Facts: