Period 5 element and because of its rarity, rhodium is usually alloyed with platinum or palladium and applied in high-temperature and corrosion-resistive coatings. White gold is often plated with a thin rhodium layer to improve its optical impression while sterling silver is often rhodium plated for tarnish resistance. Rhodium detectors are used in nuclear reactors to measure the neutron flux level. Palladium is a chemical element with the chemical symbol Pd and an atomic number of 46. It is a rare and lustrous silvery-white metal discovered in 1803 by William Hyde Wollaston. He named it after the asteroid Pallas, which was itself named
Aluminium: The Thirteenth Element Aluminium: The Thirteenth Element Aluminium: The Thirteenth Element is a Russian encyclopedia completely devoted to aluminium. The encyclopedia is published by United Company RUSAL, at the end of 2007, in both Russian and English. Four thousand copies were printed (240 pages). The encyclopedia covers various areas of aluminium application, starting from car engineering and architecture to jewellery and fashion, recounts how this metal was discovered, and describes technologies of its production, its properties and benefits for various spheres of life. The book consists of 9 chapters, with an index/glossary and name index enclosed at the end. The encyclopedia contains diversified