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Iron (Fe), chemical element and one of the transition elements, the most-used and cheapest metal. Iron makes up 5 percent of Earth’s crust and is second in abundance to aluminum among the metals. Iron, which is the chief constituent of Earth’s core, is the most abundant element in Earth as a whole.
23 Αυγ 2017 · From being a crucial building block of steel to nourishing plants and helping carry oxygen in your blood — iron is always busy helping sustain life on Earth. Iron is a brittle, hard substance,...
Iron is an essential element for almost all living organisms as it participates in a wide variety of metabolic processes, including oxygen transport, deoxyribonucleic acid (DNA) synthesis, and electron transport.
Iron is a chemical element; it has the symbol Fe (from Latin ferrum 'iron') and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, forming much of Earth's outer and inner core.
The element iron is a very chemically reactive metal, and reacts openly with oxygen in humid air; in fact, free iron is not readily found in nature. Iron dissolves in water, and reacts with steam to form hydrogen gas.
Iron is an essential element for all forms of life and is non-toxic. The average human contains about 4 grams of iron. A lot of this is in haemoglobin, in the blood. Haemoglobin carries oxygen from our lungs to the cells, where it is needed for tissue respiration.
In modern society iron is the most important of all metals, as it is used to craft different types of steel which is used in a diverse array of applications. Steel is used to make paperclips, skyscrapers, and everything in between. Iron is also an important element in plant and animal life.
