Period 6 element
Platinum is a chemical element with the chemical symbol Pt and an atomic number of 78.
Rhodium
Rhodium has also been used for honors or to signify elite status, when more commonly used metals such as silver, gold or platinum were deemed insufficient. In 1979 the "Guinness Book of World Records" gave Paul McCartney a rhodium-plated disc for being history's all-time best-selling songwriter and recording artist.