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12 points
HALOGENS is validvalid
HALOGEN, a chemical element in the seventeenth group of the periodic table
HALOGEN, any of the group of elements fluorine, chlorine, bromine, iodine, and astatine
HALOGEN, a chemical element in the seventeenth group of the periodic table
HALOGEN, any of the group of elements fluorine, chlorine, bromine, iodine, and astatine