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< Back Cadmium  SEE PERIODIC TABLE   SEE FULL ARTICLE Atomic Number 48 Atomic Symbol Cd Atomic Weight 112.411 amu Group Transition, 12 Form Solid Density @ STP 8.69 g/cm3 Melting Point 321.07 °C (609.926 °F, 594.22 °K) Boiling Point 767 °C (1412.6 °F, 1040.15 °K) Heat of Fusion 6.19 kJ/mol Heat of Vaporization 99.87 kJ/mol First Ionization Potential 8.99367 eV Electronegativity (on Pauling scale) 1.69 Specific Heat Capacity 0.232 J/g K Ground State Electron Configuration 5s2 Oxidation States +2 Stable Isotopes and Natural Abundance on Earth 106Cd, 1.25%; 108Cd, 0.89%; 110Cd, 12.49%; 111Cd, 12.80%; 112Cd, 24.13%; 113Cd, 12.22%; 114Cd, 28.73%; 116Cd, 7.49% Selected Radioisotopes 109Cd, 112Cd Atomic Radius 151 pm Crystal Structure Hexagonal Discovered by Strohmeyer, 1817

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