Copper has 35 neutrons. Because its atomic number is 29, copper also has 29 protons and 29 electrons. Copper is a metal and is a member of group 11 on the periodic table.
The physical properties of copper include a density of 8.933 grams per cubic centimeter and a boiling point of 4,644 degrees Fahrenheit. Its atomic weight is 63.546 grams per mole.
People were aware of copper as far back as 11,000 years ago, and its extraction from ores dates back about 7,000 years. In nature, the ores cuprite, malachite and bornite contain copper.
Copper is commonly used in electrical wires, coins, pipes and jewelry. Brass and bronze are alloys of copper that are used in the manufacturing of musical instruments, screws and other common items.