Iridium is one of the elements on the Periodic Table of elements. Although most people have never heard of this hard, brittle element,(as with most of the elements), there are actually some pretty interesting things about Iridium.
10 Basic Iridium Facts-
1. Element Symbol- Ir
2. It's a solid
3. Density of 22.42 g/cc
4. Melting point- 2410 C
Boiling Point- 4130 C
5. Atomic Number- 77
6. Atomic Mass- 192.22
7. Period 6 Group 9
8. Densest known element
9. Reacts to NaCl, (or table salt).
10. Class/Category- Transitional Metal
Iridium is a dense metal solid that is hard and brittle. It is a bright silvery white color, with a yellowish glow or tint.
Uses and more facts
1. This element is found as a compund
2. It is found in natural platinum
3. Most of it is in the Earths's core
4. The element is extracted from the compund with spark plugs and/or crucibles.
5. Found in alluvial deposits
6. It's uses include jelwery, compass bearing, electrical contacts, tip gold pens,special containers, and hardening platinum.
![[Bohr Model of Iridium]](http://ide.synthasite.com/sites/Dcc2/D2b3/Daf5/Df84/U8a4986c91e46a650011e48f5fa3b22cc/bohr/b0077.gif)
History Of Iridium
1. S. Tenant discovered Iridium around 1803 and 1804
2.It got it's name because in latin, iris means rainbow and because of the many salts in iridium, it is highly colored. Therefor, it is Iridium.
3.Above is the Structure of the atom, a BOHR Model. There are 77 protons and 115 Neutrons.
Helmenstein, Anne M. "Iridium Facts." About.com. 2001. 16 Dec.2008
http://chemistry.about.com/od/elementfacts/a/iridium.htm>.
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