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The preparation of fluorine was finally accomplished by the French chemist Moissan by the electrolysis of hydrofluoric acid. Aqueous potash does not form potassium hypofluorite when fluorine is bubbled into it, but only potassium fluoride. There was a big one on Nifflheim, armored against the fluorine atmosphere and the hydrofluoric-acid rains. Oxygen will combine with iron or lead or sodium, but cannot be made to combine with fluorine. Fluorspar has already been mentioned as the chief natural compound of fluorine. Symbol : F; atomic weight : Words nearby fluorine fluoride number , fluoridization , fluoridize , fluorimeter , fluorinate , fluorine , fluorine dating , fluorite , fluoro- , fluorocarbon , fluorochemical.

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Oxygen will combine with iron or lead or sodium, but cannot be made to combine with fluorine. Fluorspar has already been mentioned as the chief natural compound of fluorine.

Fluorine definition, the most reactive nonmetallic element, a pale-yellow, corrosive, toxic gas that occurs combined, especially in fluorite, cryolite, phosphate rock. Fluorine dating definition, a method of determining the relative age of fossil bones found in the same excavation by comparing their fluorine content. See more. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox.

Symbol : F; atomic weight : Words nearby fluorine fluoride numberfluoridizationfluoridizefluorimeterfluorinatefluorinefluorine datingfluoritefluoro-fluorocarbonfluorochemical. Example sentences from the Web for fluorine The preparation of fluorine was finally accomplished by the French chemist Moissan by the electrolysis of hydrofluoric acid.

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Scientific American Supplement, No. Symbol: F; atomic no: 9; atomic wt: A highly corrosive, toxic, gaseous halogen element. It is a component of many drugs, and its radioisotope is used in functional brain imaging and bone scans.

Atomic number 9.

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Published by Houghton Mifflin Company. As not all objects absorb fluorine at the same rate, this also undermines the accuracy of such a dating technique.

How Does Radiocarbon Dating Work? - Instant Egghead #28

Although this can be compensated for by accommodating for the rate of absorption in calculations, such an accommodation tends to have a rather large margin of error. In this test was used to easily identify that the ' Piltdown Man ' was forged, almost 50 years after it was originally 'unearthed'.

From Wikipedia, the free encyclopedia.

fluorine-dating definition: Noun (plural fluorine datings) 1. (archaeology) A technique used to date bones by measuring the amount of fluorine absorbed from the surrounding soil. Fluorine absorption dating is a method used to determine the amount of time an object has been underground. Fluorine absorption dating can be carried out based on the fact that groundwater contains fluoride ions. Items such as bone that are in the soil will absorb fluoride from the groundwater over time. From the amount of absorbed fluoride in Astronomic time: Cosmic Calendar, Ephemeris, .

References [ edit ]. Periods Eras Epochs.

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Canon of Kings Lists of kings Limmu. Chinese Japanese Korean Vietnamese. Lunisolar Solar Lunar Astronomical year numbering.

Deep time Geological history of Earth Geological time units. Chronostratigraphy Geochronology Isotope geochemistry Law of superposition Luminescence dating Samarium-neodymium dating.

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Amino acid racemisation Archaeomagnetic dating Dendrochronology Ice core Incremental dating Lichenometry Paleomagnetism Radiometric dating Radiocarbon Uranium-lead Potassium-argon Tephrochronology Luminescence dating Thermoluminescence dating. Fluorine absorption Nitrogen dating Obsidian hydration Seriation Stratigraphy.

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