What is the chemical symbol for iron?

The chemical symbol for iron is Fe. This symbol is derived from the Latin name for iron, "ferrum." The use of symbols in chemistry allows for a standardized and simplified communication of elements. Iron is a widely used metal, particularly noted for its strength and ability to form alloys, which is why its symbol holds significance in both industrial and scientific contexts.

The other symbols listed do not represent iron. Ir corresponds to iridium, which is a different element, while In represents indium, another separate metal. Au is the symbol for gold, also distinct from iron. Understanding these symbols and their origins aids in grasping the connections between elements and their importance in various applications.