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 Spaceflight CU Spaceflight CU Spaceflight is a student-run Cambridge University society founded with the aim of achieving cheap access to space. It is supported by the Cambridge-MIT Institute. The project was founded in the summer of 2006, with the specific goal of launching a rocket into space for less than GBP£1000. As of November, 2007, CU Spaceflight has launched five uncrewed high-altitude balloons, of which two were not successful: Nova 2 was blown into the North Sea and Nova 5 failed to ignite the Martlet 1 solid rocket motor, but landed in a reusable state. CU Spaceflight is a participant of