Rare Earth Pins and Buttons
Description: A black background displays information about the element Cerium. It shows the atomic number 58, atomic mass 140.116, density 6.77 g/cm³, and temperature 798 °C. Visuals include a silver-white metal bar, a schematic of a lanthanide structure, an atomic model with 58, icons for ductility and malleability, and a flame indicating reactivity in air. The electron configuration is also provided.
Description: A black rectangular block with white text and numbers, representing an element from the periodic table. The top left shows the number '60', the top right shows '144.242', '533.08', and '1.14'. The large center symbol is 'Nd', with '+4', '+3', and '+2' to its right. Below 'Nd' is 'Neodymium', followed by '[Xe] 6s² 4f4', and 'Lanthanide'.
