www.webelements.com (Fluor) 플루오린 - WebElements.com http://www.webelements.com/fluorine/ "WebElements Periodic Table » Fluorine » the essentials" "Fluorine" https://www.webelements.com/fluorine/ Fluorine: the essentials webelements Fluorine F 9 F（フッ素） वेबएलिमेँट्स.कॉम - फ्लोरीन (इंग्लिश मजकूर) "WebElements Periodic Table » Fluorine » the essentials" fluorine