Question

what are halogens? give examples

Answer 1

The term "halogen" means "salt-former" and compounds containing halogens are called "salts". All halogens have 7 electrons in their outer shells, giving them an oxidation number of -1. The halogens exist, at room temperature, in all three states of matter: Solid- Iodine, Astatine.
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Answer 2

halogens also called Halo group .this can be chloro, bromo, iodo