Halogen || reactivity of halogens || reactions of halogens || class 9 #mmkchemistry #halogens #chemistryclass9 in this chemistry tutorial i am going to discuss halogens. in this video i will explain what is halogen ? what are halogen atoms?. i will also discuss it's physical and chemical properties. i will briefly explain the reactivity of halogens and the reactions of halogens. in short i will give you all the information you need to know about halogens. if you are chemistry student specially c