Which element has the chemical symbol Fe?

Iron is the element with the chemical symbol Fe.

The symbol Fe comes from the Latin word ferrum, meaning iron. Iron has atomic number 26 and is the most common element by mass on Earth, making up much of the planet's core and mantle. It is also one of the most widely used metals in human civilization.

Most structural steel is based primarily on iron, with controlled amounts of carbon and sometimes other elements. Pure iron is relatively soft, but alloying and heat treatment can produce materials with much greater strength and hardness.

Iron is essential to biology because hemoglobin uses iron to help transport oxygen in blood. A common mistake is to treat rust as a separate metal; rust is mainly hydrated iron(III) oxide formed when iron reacts with oxygen and water. Iron's abundance, useful alloys, and biological role make it central to both technology and life.