Fluorine is the chemically most reactive of all the elements and combines directly at ordinary or elevated temperatures with all the elements other than nitrogen, oxygen and the lighter noble gases. It is the twelfth most abundant element in igneous rocks and ranks third among the most abundant anions. It is not surprising, therefore, that compounds of F should be present in vegetation, water, air and the flesh and organs of all living things.
Fluorine is the chemically most reactive of all the elements and combines directly at ordinary or elevated temperatures with all the elements other than nitrogen, oxygen and the lighter noble gases. It is the twelfth most abundant element in igneous rocks and ranks third among the most abundant anions. It is not surprising, therefore, that compounds of F should be present in vegetation, water, air and the flesh and organs of all living things.