Which element has the chemical symbol 'Au'?

The chemical symbol 'Au' is derived from the Latin word for gold, "aurum." This symbol is used to represent gold in the periodic table and in chemical formulas. Gold is a highly valued metal due to its rarity, luster, and resistance to tarnish, and it has been used for currency, jewelry, and various industrial applications throughout history. The correct identification of gold with the symbol 'Au' is essential for understanding chemical notation and the properties of elements.

In contrast, the other options correspond to different elements: silver is represented by 'Ag,' copper is denoted by 'Cu,' and iron is symbolized by 'Fe.' Each of these metals has distinct properties and uses, but none share the chemical symbol 'Au.' Recognizing element symbols is important in chemistry for effective communication and understanding within the scientific community.