A cewar ƙamus, electron shine barbashi na subatomic tsayayye tare da cajin wutar lantarki mara kyau, wanda aka samo a cikin dukkanin kwayoyin halitta kuma yana aiki a matsayin farkon mai ɗaukar wutar lantarki a cikin daskararru. Electrons kuma suna shiga cikin halayen sinadarai da haɗin kai, kuma halayensu yana ƙayyade yanayin zahiri da sinadarai na atom da kwayoyin halitta.
