Question

name three elements which have seven electrons in their outermost shell. How do their non-metallic character and size change down the group.

Answer 1

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.

Their non-metallic(electronegative) characters decreases while going down in the Periodic Table and Atomic size of atoms increases while going down in a group.

I hope it Helped You.

Answer 2

elements having 7 electrons in their outermost shell are fluorine chlorine and nitrogen