Comment: Fluorine is element #9. Periodic Table of Elements. Halogen gas.

(See in situ)


Fluorine is element #9. Periodic Table of Elements. Halogen gas.

Fluoride is a compound. Its common form is calcium-fluoride.

Fluorine is an element. It is highly toxic. It combines readily with all elements except a couple of noble gases (as I recall). If nothing else nearby, fluorine combines with itself creating a fluoride (F2).

Look at this wonderful Periodic Table of Elements (in color; interactive; vivid historic photographs; wonderful narratives)

Disclaimer: Mark Twain (1835-1910-To be continued) is unlicensed. His river pilot's license went delinquent in 1862. Caution advised. Daily Paul