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Fluorine F Atomic Number: 9 Atomic Weight: 18.9984032 Melting Point: 53.63 K Boiling Point: 85.03 K Specific mass: 0.001696 g/cm3 Electronegativity: 3.98
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Chlorine Cl Atomic Number: 17 Atomic Weight: 35.453 Melting Point: 172.31 K Boiling Point: 239.11 K Specific mass: 0.003214 g/cm3 Electronegativity: 3.16
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Bromine Br Atomic Number: 35 Atomic Weight: 79.904 Melting Point: 266.05 K Boiling Point: 332.0 K Specific mass: 3.122 g/cm3 Electronegativity: 2.96
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Iodine I Atomic Number: 53 Atomic Weight: 126.90447 Melting Point: 386.65 K Boiling Point: 475.4 K Specific mass: 4.93 g/cm3 Electronegativity: 2.66
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Astatine At Atomic Number: 85 Atomic Weight: [210] Melting Point: 575.15 K Boiling Point: 610 K Specific mass: 7 g/cm3 Electronegativity: 2.2
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Tennessine Ts Atomic Number: 117 Atomic Weight: [294] Melting Point: ? 573–773 K Boiling Point: ? 823 K Specific mass: ? g/cm3 Electronegativity: ?
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