🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoPolskiPortuguêsSvenskaTiếng ViệtРусскийالعربيةहिन्दी中文日本語EntityQ965478· pop 21unsaturated hydrocarbonhydrocarbon that has double or triple covalent bonds between adjacent carbon atomsConnectionssaturated and unsaturated compoundsEntity