Quiz on Fluorine Element

Fluorine is the most reactive and electronegative element in the periodic table. It has the atomic number 9 and is represented by the symbol “F.” It is a pale yellow gas at room temperature and belongs to the halogen group. Fluorine readily reacts with almost all other elements, forming compounds known as fluorides. One of its important compounds, sodium fluoride, is commonly added to toothpaste to help prevent tooth decay. However, fluorine in its pure form is highly toxic and corrosive.