🌐EnglishEnglishEspañolFrançaisPortuguêsالعربية한국어中文日本語EntityQ3130580· pop 9· linked from 62 articlesfour-center two-electron bondAvailable in 9 languagesEspañolFrançais中文日本語PortuguêsالعربيةSerbianSerbian (Latin)via Wikidata sitelinks · CC0Connectionshydrogen bondEntityatomEntityCategoriesChemical bonding