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Oxygen O Atomic Number: 8 Atomic Weight: 15.9994 Melting Point: 50.5 K Boiling Point: 90.20 K Specific mass: 0.001429 g/cm3 Electronegativity: 3.04
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Sulfur S Atomic Number: 16 Atomic Weight: 32.065 Melting Point: 388.51 K Boiling Point: 717.8 K Specific mass: 2.067 g/cm3 Electronegativity: 2.58
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Selenium Se Atomic Number: 34 Atomic Weight: 78.96 Melting Point: 494.15 K Boiling Point: 958 K Specific mass: 4.809 g/cm3 Electronegativity: 2.55
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Tellurium Te Atomic Number: 52 Atomic Weight: 127.60 Melting Point: 722.8 K Boiling Point: 1261 K Specific mass: 6.232 g/cm3 Electronegativity: 2.1
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Polonium Po Atomic Number: 84 Atomic Weight: [210] Melting Point: 527.15 K Boiling Point: 1235 K Specific mass: 9.32 g/cm3 Electronegativity: 2
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Livermorium Lv Atomic Number: 116 Atomic Weight: [293] Melting Point: ? K Boiling Point: ? K Specific mass: ? 12.9 g/cm3 Electronegativity: ?
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