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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.
In chemistry, the molar mass (M) (sometimes called molecular weight or formula weight, ... Thus, for example, the molar mass of iron is about 55.845 g/mol.
Iron-60 is an iron isotope with a half-life of 2.6 million years, [12] [13] but was thought until 2009 to have a half-life of 1.5 million years. It undergoes beta decay to cobalt-60, which then decays with a half-life of about 5 years to stable nickel-60. Traces of iron-60 have been found in lunar samples.
Iron(II,III) oxide, or black iron oxide, is the chemical compound with formula Fe 3 O 4. ... Fe 3 O 4: Molar mass: 231.531 g·mol −1: 3D model : Interactive image;
Fe 2 O 3: Molar mass: 159.687 g·mol −1 Appearance Red solid Odor: Odorless ... Iron(III) oxide or ferric oxide is the inorganic compound with the formula Fe 2 O 3.
Molar mass: 162.204 g/mol ... Iron(III) chloride describes the inorganic compounds with the formula Fe Cl 3 (H 2 O) x. Also called ferric chloride, these compounds ...
Molar mass: 71.844 g/mol Appearance black crystals Density: 5.745 g/cm 3: ... Iron(II) oxide or ferrous oxide is the inorganic compound with the formula FeO.
Iron(II) carbonate, or ferrous carbonate, is a chemical compound with formula FeCO 3 , that occurs naturally as the mineral siderite . At ordinary ambient temperatures, it is a green-brown ionic solid consisting of iron(II) cations Fe 2+