🌐EnglishEnglishDeutschEspañolNederlandsالعربية한국어中文日本語EntityQ1492704· pop 10· linked from 229 articlesAlpha effectEffect in chemistryAvailable in 10 languagesEspañolDeutsch中文العربيةCatalanGreekNederlandsUkrainian한국어via Wikidata sitelinks · CC0ConnectionsatomEntityelectronEntityCategoriesOpen problemsPhysical organic chemistry