name the following. 1 . three elements having 7 electrons in their outermost shell
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Answer. Hiii Friend, Elements having seven electrons in their outermost are :- Fluorine, Chlorine, Bromine, Iodine. These elements in Modern Periodic Table comes in Group 17(Halo group) and are known as Halogen elements.
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Fluorine, Chlorine, & Iodine.
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