Why fluorine is actually a practical component
https://www.livebinders.com/b/3572234?tabid=284fe65d-6c20-76fd-7f29-e3656e456021
Why Fluorine Is a Beneficial Element<br/>Fluorine is an extremely reactive component, and as such is frequently not noticed in its elemental type. It's the 13th most commonly encountered element from the Earth’s crust