The element with atomic number 29, symbol Cu, and excellent electrical conductivity is copper. The symbol comes from the Latin name cuprum, referring to the island of Cyprus, an important source of copper in antiquity.
Copper is soft, ductile, and highly conductive, which makes it useful in electrical wiring, motors, transformers, plumbing, and electronics. It conducts electricity better than most common metals, although silver is even more conductive and is too expensive for most large-scale wiring.
Copper is also one of the few metals found naturally in metallic form rather than only in ores. Humans used it thousands of years ago, and combining it with tin produced bronze, one of the defining materials of the Bronze Age.
A common mix-up is confusing copper with gold or silver because all three conduct electricity and appear among the answer choices. Copper is distinctive here because its chemical symbol, Cu, does not resemble the English word but reflects its Latin origin.