The chemical group or radical consisting of fluorine bonded to oxygen, with the formula FO, used in various chemical compounds.
From 'fluor-' plus '-yl' (a chemical suffix denoting a radical or functional group), coined in 19th-century chemical nomenclature.
The fluoryl radical is chemically unusual because FO molecules are quite reactive and don't occur naturally in abundance, but when chemists create them, they behave like tiny aggressive packages seeking to bond with other elements.
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