Is it true group 7a elements are highly reactive nonmetals known as halogens?

Yes, it is true that the elements in Group 7A of the Periodic Table, known as halogens, are highly reactive nonmetals. This group includes fluorine, chlorine, bromine, iodine, and astatine. Their high reactivity is due to their strong tendency to gain one electron to achieve a stable electron configuration. Halogens are commonly found in nature in compound form rather than in their elemental state due to this reactivity.