The elements in group 17 of the periodic table are all called halogens. All halogens have the same
atomic number.
atomic mass.
number of possible isotopes.
number of valence electrons.
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Halogens are nonmetals in group 17 (or VII) of the periodic table. Down the group, atom size increases. ... These five toxic, non-metallic elements make up Group 17 of the periodic table and consist of: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At)
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Halogens are nonmetals in group 17 (or VII) of the periodic table. Down the group, atom size increases. As a diatomic molecule, fluorine has the weakest bond due to repulsion between electrons of the small atoms. Due to increased strength of Van der Waals forces down the group, the boiling points of halogens increase.
Explanation:
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