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Carbon C Atomic Number: 6 Atomic Weight: 12.0107 Melting Point: 3948.15 K Boiling Point: 4300 K Specific mass: 2.267 g/cm3 Electronegativity: 2.55
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Silicon Si Atomic Number: 14 Atomic Weight: 28.0855 Melting Point: 1638.15 K Boiling Point: 3538 K Specific mass: 2.3296 g/cm3 Electronegativity: 1.9
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Germanium Ge Atomic Number: 32 Atomic Weight: 72.64 Melting Point: 1211.45 K Boiling Point: 3106 K Specific mass: 5.323 g/cm3 Electronegativity: 2.01
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Tin Sn Atomic Number: 50 Atomic Weight: 118.710 Melting Point: 505.21 K Boiling Point: 2875 K Specific mass: 7.287 g/cm3 Electronegativity: 1.96
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Lead Pb Atomic Number: 82 Atomic Weight: 207.2 Melting Point: 600.75 K Boiling Point: 2022 K Specific mass: 11.342 g/cm3 Electronegativity: 2.33
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Flerovium Fl Atomic Number: 114 Atomic Weight: [289] Melting Point: ? 340 K Boiling Point: ? 420 K Specific mass: ? 22 g/cm3 Electronegativity: ?
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