Element: Fluorine
Symbol: F
Element paragraph
The atomic number is 9 and the mass number is 18.998. The period number its in is 2 and is in group 17. The group in which it is in is called halogens. The state in which it is in is a gas. Which it is a non-metal.
Toothpaste
Fluorine is used in toothpaste which exerts effects that prevent caries, such as suppressings acid production.
Water
Fluorine is used in water because about 95 percent is used to clean the water.
Refrigeration
Fluorine is used in refrigeration because it makes everything cold by letting it go through the pipes in the refrigerator.