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Iron. 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.
Naturally occurring iron ( 26 Fe) consists of four stable isotopes: 5.845% of 54 Fe (possibly radioactive with a half-life over 4.4 × 1020 years), [ 4] 91.754% of 56 Fe, 2.119% of 57 Fe and 0.286% of 58 Fe. There are 24 known radioactive isotopes, the most stable of which are 60 Fe (half-life 2.6 million years) and 55 Fe (half-life 2.7 years).
Genre (s) Tactical role-playing. Mode (s) Single-player, multiplayer. Fire Emblem: The Blazing Blade, [ a] also known simply as Fire Emblem, is a tactical role-playing game developed by Intelligent Systems and published by Nintendo for the Game Boy Advance handheld video game console. It is the seventh installment in the Fire Emblem series, [ b ...
The Fundamentals of Engineering ( FE) exam, also referred to as the Engineer in Training ( EIT) exam, and formerly in some states as the Engineering Intern ( EI) exam, is the first of two examinations that engineers must pass in order to be licensed as a Professional Engineer (PE) in the United States. The second exam is the Principles and ...
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Iron(III) oxide in a vial. Iron(III) oxide or ferric oxide is the inorganic compound with the formula Fe 2 O 3.It is one of the three main oxides of iron, the other two being iron(II) oxide (FeO), which is rare; and iron(II,III) oxide (Fe 3 O 4), which also occurs naturally as the mineral magnetite.
At atmospheric pressure, three allotropic forms of iron exist, depending on temperature: alpha iron (α-Fe, ferrite), gamma iron (γ-Fe, austenite), and delta iron (δ-Fe). At very high pressure, a fourth form exists, epsilon iron (ε-Fe, hexaferrum). Some controversial experimental evidence suggests the existence of a fifth high-pressure form ...
The data below tabulates standard electrode potentials ( E °), in volts relative to the standard hydrogen electrode, at: Absolute partial pressure 101.325 kPa (1.00000 atm; 1.01325 bar) for each gaseous reagent — the convention in most literature data but not the current standard state (100 kPa). The Nernst equation allows to calculate real ...