Astatine is the 6th period halogen.
Chlorine is the halofen present in the third periodg
Fluorine
bromine
It is bromine. Edit: NO. It is NOT bromine. The third period halogen is chlorine (Cl). Bromine happens to be in period 4.
Astatine is the 6th period halogen.
Chlorine, the halogen in period 3.
chlorine
Chlorine is the element located in Period 3 that is used for water purification. It is also a member of the Halogen group.
chlorine
Iodine
Chlorine is the halofen present in the third periodg
Fluorine
bromine
It is bromine. Edit: NO. It is NOT bromine. The third period halogen is chlorine (Cl). Bromine happens to be in period 4.
Iodine, element number 53 is the halogen (Group 17) element in period 5.
This chemical element is astatine (At).