Iridium

 Name: Iridium Iridium got its name because of its colorful salts. Iris in Latin means "Rainbow," so Smithson Tennant thought it was a fitting name. Iridium was discovered and named by a British scientist, Smithson Tennant in1803 Symbol: Ir Atomic Number: 77 Atomic Mass: 192.217 amu Melting Point: 2410.0 °C (2683.15 K, 4370.0 °F) Boiling Point: 4527.0 °C (4800.15 K, 8180.6 °F) Number of Protons or Electrons: 77 Number of Neutrons: 115 Classification: Transition Metal Crystal Structure: Cubic Density: 22.5 g/cm3 Color: white Date of Discovery: 1804 Discoverer: S. Tenant...................................................................................................... Name Origin: From the Latin word iridis ( R a i n b o w ) Uses: tip gold pens, crucible and special containers Obtained From: gravel deposits with platinum protons: 77 Neutrons: 115 Where its found: Iridium is found in the earths crust and in meteorites. iridium is more abundant in meteorites. First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 18 Fourth Energy Level: 32 Fifth Energy Level: 15 Sixth Energy Level: 2 ||
 * Number of Energy Levels: 6


 * Isotope || Half Life ||
 * Ir-188 || 1.7 days ||
 * Ir-189 || 13.2 days ||
 * Ir-190 || 11.8 days ||
 * Ir-190m || 1.2 hours ||
 * Ir-190m2 || 3.2 hours ||
 * Ir-191 || Stable ||
 * Ir-192 || 73.8 days ||
 * Ir-193 || Stable ||
 * Ir-193m || 10.5 days ||
 * Ir-194 || 19.3 hours ||
 * Ir-194m || 170.0 days ||

iridium costs about $450 troy ounce. The price of the metal fluctuates daily Information from http://www.chemicalelements.com/elements/ir.html