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
HMS Athene operated as a seaplane carrier in the South Atlantic over 1942/43. In 1946 the Navy returned her to Clan Line. She was reconverted for merchant service and served until 1963, when she was sold for scrap. She arrived in Hong Kong for breaking up on 19 July 1963. HMS Athene HMS "Athene" was a Royal Navy aircraft transport. She was a merchant conversion, requisitioned by the Navy during the Second World War and returned after its end. She is the only ship of the Royal Navy to be named after the Greek goddess Athene. She was broken up in 1963.