If you have a Periodic Table of the elements available, look at the second column from the right. Those elements are often referred to as "halogens".
The "rows" in the periodic table are often referred to as the "periods". So the halogen from the third period would be "CL", or chlorine.
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It is bromine. Edit: NO. It is NOT bromine. The third period halogen is chlorine (Cl). Bromine happens to be in period 4.
The halogen in the third period is chlorine (Cl). It is a highly reactive non-metal element that is part of Group 17 in the periodic table. Chlorine is commonly used for disinfection purposes and in the production of various chemicals.
Chlorine is the halofen present in the third periodg
The electron configuration 1s22s22p63s23p3 is in the third period and belongs to the halogen group (Group 17) on the periodic table.
The halogen in period 2 is fluorine.
The halogen in the 2nd period is fluorine (F).
The halogen in period 6 is astatine. It is a radioactive element and is the rarest naturally occurring halogen on Earth.
If you have a periodic table of the elements available, look at the second column from the right. Those elements are often referred to as "halogens". The "rows" in the periodic table are often referred to as the "periods". So the halogen from the third period would be "CL", or chlorine. Glad to help with your homework.
Chlorine is the halogen that is in the same period as potassium. They are both in period 3 of the periodic table.
Bromine (Br2) is the third most reactive halogen.
Fluorine is in the halogen family and in the second period of the periodic table.
Bromine is a liquid nonmetal halogen in the fourth period of the periodic table. It is the only halogen that exists in a liquid state at room temperature.