Group 11 element Group 11 element Group 11, by modern IUPAC numbering, is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), and gold (Au). Roentgenium (Rg) is also placed in this group in the periodic table, although no chemical experiments have yet been carried out to confirm that it behaves like the heavier homologue to gold. Group 11 is also known as the "coinage metals", due to their former usage. They were most likely the first three elements discovered. Copper, silver, and gold all occur naturally in elemental form. All the elements of the group except
¡Cu-Cut! ¡Cu-Cut! ¡Cu-cut! was a Catalan illustrated satirical magazine, written in Catalan. Published in Barcelona between 1902 and 1912, it followed the political line marked by Francesc Cambó's Lliga Regionalista. ¡Cu-cut!, named after the cuckoo bird (), was first published on 2 January 1902 and, like El Be Negre magazine that would be published later, it steadfastly opposed Lerrouxism in Spain. Its director was Manuel Folch i Torres and most articles were written by Josep Morató i Grau, Eduard Coca i Vallmajor and Manuel Urgellès, among others such as Josep Abril i Virgili and Vicenç Caldés i Arús. The main illustrators