🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsTiếng Việtالعربيةفارسی한국어中文日本語EntityQ534307· pop 23· linked from 349 articlesHückel's rulemethod of determining aromaticity in organic moleculesConnectionshydrogen bondEntitypi bondEntityCategoriesPhysical organic chemistryRules of thumb