Chemically, the most common oxidation states of iron are iron (II) and iron (III). Iron shares many properties with other transition metals, including the other group 8 elements, ruthenium and osmium. Iron forms compounds in a wide range of oxidation states, −2 to +7.
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 is an important mineral that helps maintain healthy blood. A lack of iron is called iron-deficiency anemia, which affects about 4-5 million Americans/GettyImages-157526585-93425538070d4422ad42d22af28c0758.jpg)
Iron is a metal that is important for both plants and animals, especially in hemoglobin. Iron comes from the word 'ferrum', and has been used by humans since ancient times. Iron is the fourth most common element on Earth and is found in the sun and other stars.