Chemical element named after goddess

Iridium is the most corrosion-resistant material known. It is used in special alloys and forms an alloy with osmium, which is used for pen tips and compass bearings. It was used in making the standard metre bar, which is an alloy of 90% platinum and 10% iridium. It is also used for the contacts in spark plugs because of its high melting point and low reactivity. A very thin layer of iridium exists in the Earth’s crust. It is thought that this was caused by a large meteor or asteroid hitting the Earth. Meteors and asteroids contain higher levels of iridium than the Earth’s crust. The impact would have caused a huge dust cloud depositing the iridium all over the world. Some scientists think that this could be the same meteor or asteroid impact that wiped out the dinosaurs. Iridium was discovered together with osmium in1803 by Smithson Tennant in London. When crude platinum was dissolved in dilute aqua regia, which is a mixture of nitric and hydrochloric acids, it left behind a black residue thought to be graphite. Tennant thought otherwise, and by treating it alternately with alkalis and acids he was able to separate it into two new elements. These he announced at the Royal Institution in London, naming one iridium, because its salts were so colourful and the other osmium because it had a curious odour (see osmium). Relative supply risk 7.6 Crustal abundance (ppm) 0.000037 Recycling rate (%) >30 Substitutability High Production concentration (%) 60 Reserve distribution (%) 9...

How do elements on the periodic table get their names? Sometimes they are named after Greek or Roman gods, like Plutonium (Pluto). Others are named after prominent physicists and chemists (Einsteinium). There are also elements named after countries (Germanium), regions (Scandium), cities (Holmium is named after Stockholm), small towns (Ytterbium), continents (Europium), Chemical properties (Argon is Greek for "lazy", Tungsten is Swedish for "heavy stone"), or factors to do with their discovery (Neon for "new", Helium after Greek helios = sun, because an important feature of its discovery on Earth was that it matched previously unassigned lines in the spectrum of the sun)

Facts You Should Know: The Periodic Table Quiz There are about 30 recognized minerals containing beryllium, including beryl (Al 2Be 3Si 6O 18, a beryllium aluminum silicate), bertrandite (Be 4Si 2O 7(OH) 2, a beryllium silicate), 2SiO 4), and 2O 4). (The Beryllium is the only stable light metal with a relatively high Much beryllium is used as a low-percentage component of hard Neutrons were discovered (1932) by British physicist 6 The beryllium oxide (beryllia, BeO) is a high-temperature 2) catalyzes the Friedel-Crafts reaction and is used in cell baths for electrowinning or electrorefining beryllium. Basic beryllium carbonate, BeCO 3∙ xBe(OH) 2, precipitated from 3) and 2), along with basic beryllium acetate, Be 4O(C 2 3O 2) 6, are used as a starting material for

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Glossary Group A vertical column in the periodic table. Members of a group typically have similar properties and electron configurations in their outer shell. Period A horizontal row in the periodic table. The atomic number of each element increases by one, reading from left to right. Block Elements are organised into blocks by the orbital type in which the outer electrons are found. These blocks are named for the characteristic spectra they produce: sharp (s), principal (p), diffuse (d), and fundamental (f). Atomic number The number of protons in an atom. Electron configuration The arrangements of electrons above the last (closed shell) noble gas. Melting point The temperature at which the solid–liquid phase change occurs. Boiling point The temperature at which the liquid–gas phase change occurs. Sublimation The transition of a substance directly from the solid to the gas phase without passing through a liquid phase. Density (g cm −3) Density is the mass of a substance that would fill 1 cm 3 at room temperature. Relative atomic mass The mass of an atom relative to that of carbon-12. This is approximately the sum of the number of protons and neutrons in the nucleus. Where more than one isotope exists, the value given is the abundance weighted average. Isotopes Atoms of the same element with different numbers of neutrons. CAS number The Chemical Abstracts Service registry number is a unique identifier of a particular chemical, designed to prevent confusion arising from diff...

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