The Group 7 elements are also known as the halogens. The three common Group 7 elements are chlorine, bromine and iodine. The word ‘halogen’ means 'salt former'.
The Group 7 elements are called the halogens. They are placed in the vertical column, second from the right, in the periodic table.
Chlorine, bromine and iodine are the three common Group 7 elements. Group 7 elements form salts when they react with metals. The term ‘halogen’ means ‘salt former’.