Home›Browse›第一級🌐日本語EnglishBahasa IndonesiaDeutschEspañolFrançaisPolskiSvenskaTürkçeفارسی한국어日本語EntityQ2110192· pop 10· linked from 20 articles第一級Sign in to saveterm in organic chemistry used to describe degree of substitution of an atom in a moleculeWikidata factsFollowed bysecondaryvia Wikidata · CC0Available in 10 languagesEspañolFrançaisDeutschBahasa IndonesiaCzechSvenskaTürkçeفارسی한국어via Wikidata sitelinks · CC0