GENERAL KNOWLEDGE

Detailed explanation-1: -halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts).

Detailed explanation-2: -The group 17 elements include Fluorine(F), Chlorine (Cl), Bromine(Br), Iodine(I), and Astatine(At) from the top to the bottom. They are called “halogens” because they give salts when they react with metals.

Detailed explanation-3: -Group 7A (or VIIA) of the periodic table are the halogens: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).

Detailed explanation-4: -The halogens are located on the left of the noble gases on the periodic table. These five toxic, non-metallic elements make up Group 17 of the periodic table and consist of: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).

Detailed explanation-5: -Why are the elements in Group 17 categorised together? Group 17 is the halogens, they have 7 electrons in their outermost shell. They are all non-metals, and form anions with a-1 charge. Reactivity decreases down the group, with fluorine being the most reactive.