Symbol: F

Atomic Number: 9

Atomic Weight: 18.9984

Fluorine has the symbol F and is the ninth element in the periodic table. Normally, fluorine is a gas with a pale yellow color that is made up of diatomic molecules, F2. Fluorine is less common in stars than on Earth, where it is the 13th most frequently found element in the crust. The element is the lightest of the halogens. Halogens are non-metal elements. The other halogens are chlorine (Cl), iodine (I), bromine (Br), astatine (At). They are found in all three states of matter at standard temperatures and are unique in that sense. Fluorine has one isotope, fluorine-19....Read More