Final answer:
The most reactive nonmetals in the periodic table are called halogens, including fluorine, chlorine, and iodine.
Step-by-step explanation:
The most reactive nonmetals in the periodic table are called halogens.
The element fluorine is the most reactive nonmetal. It is not found in nature as a free element and reacts explosively with many other elements and compounds.
Other halogens, such as chlorine and iodine, are also highly reactive nonmetals.