The most common eating disorders are anorexia nervosa and bulimia nervosa (usually called simply anorexia and bulimia). But other food-related disorders, like avoidant/restrictive food intake disorder, binge eating, body image disorders, and food phobias, are becoming more and more commonly identified.
Lithium was discovered by Johan August Arfwedson in 1817. Arfwedson found the new element within the minerals spodumene and lepidolite in a petalite ore (LiAl(Si2O5)2) that he was analyzing during a routine investigation of some minerals from a mine on the island Utoe utÃ¶ In. sweden
Discovery of Iridium. Iridium was discovered in 1803, by English chemist Smithson Tennant in London. He found it in the residue left when crude platinum had been dissolved in aqua regia (a mixture of hydrochloric acid and nitric acid). Smithson Tennant also discovered osmium at the same time.ource: Iridium is found in natural alloys with platinum and osmium in alluvial deposits. Commercially, iridium is recovered as a by-product from the nickel mining industry. Isotopes: Iridium has 34 isotopes whose half-lives are known, with mass numbers from 165 to 198.