Beyond Atomic Numbers - Every Element Has a Story
55.845
8
4
D Block
Transition Metal
Iron has been known since prehistoric times. Ancient civilizations first used iron from meteorites before humans learned to extract it from iron ores, leading to the beginning of the Iron Age around 1200 BCE.
Iron is the fourth most abundant element in Earth's crust and the most abundant element by mass in Earth's core. Major iron ores include hematite, magnetite, limonite and siderite.
Group 8 | Period 4 | D Block | Transition Metal
Iron is the primary metal used to manufacture steel. It is essential in construction, transportation, machinery, automobiles, ships, railways and countless industrial applications.
Carbon, Chromium, Nickel, Manganese and Oxygen
Iron reacts with oxygen and moisture to form rust (iron oxide). Protective coatings, alloying elements and paints help prevent corrosion.
Electronic Configuration: [Ar] 3d⁶ 4s²
Iron provides excellent strength, durability and magnetic properties. It forms the basis of steel, making it one of the world's most valuable engineering materials.
Earth's core is composed mainly of iron and nickel. This iron core helps generate Earth's magnetic field, which protects our planet from harmful solar radiation.
Nearly all modern buildings, bridges, railway tracks, automobiles and industrial machinery depend on steel, which is primarily made from iron. The Industrial Revolution was powered by iron and steel.
Iron is an essential component of hemoglobin, the protein in red blood cells that transports oxygen from the lungs to every part of the body. Without enough iron, people can develop iron-deficiency anemia.
The Earth's inner and outer core consist mainly of iron mixed with nickel. The movement of molten iron in the outer core generates Earth's magnetic field through the geodynamo process.
Iron is one of the few naturally ferromagnetic elements. This property makes it essential for electric motors, transformers, generators, speakers and magnetic storage devices.
The widespread use of iron around 1200 BCE marked the beginning of the Iron Age. Iron tools and weapons were stronger and more durable than those made from bronze, transforming agriculture, transportation, architecture and warfare. This period changed the course of human civilization.
Scientists are developing advanced high-strength steels, iron-based superconductors, environmentally friendly steel manufacturing processes and recyclable iron alloys for sustainable engineering.
Iron is formed during the final stages of massive stars before they explode as supernovae. Because fusion beyond iron consumes energy instead of releasing it, iron marks a turning point in stellar evolution.
The chemical symbol Fe comes from the Latin word Ferrum, from which terms like "ferrous" and "ferric" are also derived.