Top 10 Most Expensive Metals in the World
Increase your knowledge with top 10 most expensive metals in the world. A metal is an element, compound, or alloy that is a good conductor of both electricityand heat. Metals are usually malleable and shiny, that is they reflect most of incident light. In a metal, atoms readily lose electrons to form positiveions (cations). Those ions are surrounded by de-localized electrons, which are responsible for the conductivity.
Molybdenum as one of the most expensive metals is a Group 6 chemical element with the symbol Mo and atomic number 42. The free element, which is a silvery metal, has the sixth-highestmelting point of any element. It readily forms hard, stable carbides, and for this reason it is often used in high-strength steel alloys.
Iridium is the chemical element with atomic number 77, and is represented by the symbol Ir. A very hard, brittle, silvery-whitetransition metal of the platinum family, iridium is the second-densest element (after osmium) and is the most corrosion-resistant metal, even at temperatures as high as 2000 °C.
Osmium is a chemical element with the symbol Os and atomic number 76. This most expensive metals is a hard, brittle, blue-gray or blue-black transition metal in the platinum family and is the densest natural element, with a density of 22.59 g/cm3 (slightly greater than that of iridium and twice that of lead).
Ruthenium is a chemical element with symbol Ru and atomic number 44. It is the most expensive metals belonging to the platinum group of the periodic table. Ruthenium usually occurs as a minor component of platinumores and its annual production is only about 12 tonnes worldwide. Most ruthenium is used for wear-resistant electrical contacts and the production of thick-film resistors.
Palladium is a chemical element with the chemical symbol Pd and an atomic number of 46. It is the mostexpensive metals and lustrous silvery-white metal discovered in 1803 by William Hyde Wollaston. He named it after the asteroid Pallas, which was itself named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas.
Rhenium is a chemical element with the symbol Re and atomic number 75. It is a silvery-white, heavy, third-rowtransition metal in group 7 of the periodic table. With an average concentration of 1 part per billion (ppb), rhenium is one of the rarest elements in the Earth’s crust. The free element has the third-highest melting point and highest boiling point of any element.
Gold is a chemical element with the symbol Au and an atomic number of 79. Gold as the most expensive metals is a dense, soft, shiny, malleable and ductile metal. Pure gold has a bright yellow color and luster traditionally considered attractive, which it maintains without oxidizing in air or water. It is one of the least reactive solid chemical elements.
Platinum is a chemical element with the chemical symbol Pt and an atomic number of 78. Even though it has six naturally occurring isotopes, platinum is one of the most expensive metals in earth’s crust and has an average abundance of approximately 5 μg/kg. It is the least reactive metal.
Rhodium is a chemical element that is a rare, silvery-white, hard, and chemically inert transition metal and a member of theplatinum group. It has the chemical symbol Rh and atomic number 45. It is the second of the list of the most expensive metals.
Technetium is the chemical element with atomic number 43 and symbol Tc. It is the lowest atomic number element without any stable isotopes; every form of it is radioactive. Nearly all technetium is produced synthetically and only minute amounts are found in nature. Technetium is the most expensive metals in the world.