The very active nonmetals fluorine, chlorine, bromine, iodine, and astatine are in the group called halogen.
Six elements make up Group 17 of the periodic table, and these are the halogen elements. The elements fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At), with Tennessee (T) make up group 17, which is located in the second column from the right of the periodic table.
Halogens, or Group 17 on the periodic table, which include fluorine, are the most reactive nonmetals. This is due to the fact that each of their valence electron shells has one empty space.
Therefore, The very active nonmetals fluorine, chlorine, bromine, iodine, and astatine are in the group called halogen.
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