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halogen [halogens]▼(any element of group 17)noun[UK: ˈhæ.lə.dʒən] [US: ˈhæ.lə.dʒən]Fluorine, chlorine, bromine, iodine and astatine are halogens. = El flúor, el cloro, el bromo, el yodo y el astato son halógenos.
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