Iron has four stable isotopes: 54 Fe (5.845% of natural iron), 56 Fe (91.754%), 57 Fe (2.119%) and 58 Fe (0.282%). Twenty-four artificial isotopes have also been created.

The FE exam is generally your first step in the process of becoming a licensed professional engineer (P.E.). It is designed for recent graduates and students who are close to finishing an undergraduate …

Jan 2, 2026 · 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 …

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The meaning of FE is iron.

Chemical element, Iron, information from authoritative sources. Look up properties, history, uses, and more.

Iron is the 26th element in the periodic table and has a symbol of Fe and atomic number of 26. It has an atomic weight of 55.845 and a mass number of 56. Iron has twenty-six protons and thirty neutrons in …

Jun 9, 2025 · The element symbol, Fe, was shortened from the Latin word ' ferrum ' meaning 'firmness'. History: Ancient Egyptian iron objects have been dated to around 3500 B.C.

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Apr 28, 2023 · Iron is the metallic element with the atomic number 26 and is represented by the symbol ‘Fe’ in the periodic table. It is classified as a transition metal and belongs to the d-block of group 8 …