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Iron Basic Information Irons is a silvery metal and its nuclei are extremely stable Its symbol on the periodic table is Fe Its atomic number is 26 and its atomic mass is 55845 Its melting point is 1535 degrees Celsius and its boiling point is 2750 degrees Celsius It has 30 neutrons and 26 protons and electrons It also has a cubic crystal structure It is classified as a transition metal It has 4 energy levels with 2 electrons on the first 8 on the second 14 on the third and 2 on the fourth It has a relatively average number of energy levels The following is a list of the half-life for different isotopes As it shows on the list it has extremely stable nuclei Isotope Half Life Fe-52 83 hours Fe-54 Stable Fe-55 27 years Fe-56 Stable Fe-57 Stable Fe-58 Stable Fe-59 545 days Fe-60 1500000 years Discovery and Origin Irons discovery is unknown along with its discoverer It was discovered in ancient times The name origin was from Latin and came from the Latin word ferrum iron which is also the reason for the periodic table symbol Fe Before it was the copper age but the ancients found out you couldnt just heat it up to melt it and needed to apply a form of coal in order to wield it which started the iron age in 1000 BC Below are the major breakthroughs in history of iron 1300-1200 BC The Hittites were working iron although they were probably producing the metal before this date 700 BC Steel picks from this era have been found in Assyria it is not known if their manufacture was deliberate or as a result of prolonged smelting of iron in an abundance of charcoal 1786 Monge Vandermonde and Berthollet established that the difference between iron and steel was due to carbon 1879 Sidney Gilchrist
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