About
烯 is a modern phono-semantic compound devised for chemical nomenclature. The fire radical 火 hints at combustible substances and organic chemistry, while 希 (xī) supplies the pronunciation. In chemistry, it names an alkene, an unsaturated hydrocarbon containing at least one carbon-carbon double bond, and is grouped with 烷 (alkane) and 炔 (alkyne) to classify these hydrocarbon families.
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