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< Back Bismuth  SEE PERIODIC TABLE   SEE FULL ARTICLE Atomic Number 83 Atomic Symbol Bi Atomic Weight 208.98037 amu Group Other Metals, 15 Form Solid Density @ STP 9.79 g/cm3 Melting Point 271.40 °C (520.52 °F, 544.55 °K) Boiling Point 1564 °C (2847.2 °F, 1837.15 °K) Heat of Fusion 11.30 kJ/mol Heat of Vaporization 70.5 kJ/mol First Ionization Potential 7.289 eV Electronegativity (on Pauling scale) 1.9 Specific Heat Capacity 0.122 J/g K Ground State Electron Configuration 5d10 6s2 6p3 Oxidation States +3, +5 Stable Isotopes and Natural Abundance on Earth 209Bi, 100% Selected Radioisotopes 207Bi, 212Bi, 213Bi Atomic Radius 143 pm Crystal Structure Monoclinic

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