# Which of the halogen is most abundant in the earth's crust?

$\begin{array}{1 1}F\\Cl\\Br\\I\end{array}$

Because of their great reactivity, the free halogen elements are not found in nature. In combined form, fluorine is the most abundant of the halogens in Earth's crust.
F is most abundant in the earth's crust
edited Nov 15, 2017