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Halogens (Elements in the group 17 (Br (Bromine), I (Iodine), Cl…
Halogens
Elements in the group 17
Br
Bromine
I
Iodine
Cl
Chlorine
At
Astatine
F
Fluorine
Non-metalic elements located in the block p
Need only one electron to complete their outer orbit
Are very reactive
Need only 1 electron to complete their last orbit
All exist in diatomic molecules
Not found in nature because of their reactivity
Found as ions and compounds
Reactivity decreases when moving down