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Metal > LeadPb - Lead A toxic heavy metal. Its malleability has been lead's greatest virtue as it has been used since ancient times for containers and water pipes. Our students investigate the density, reactivity and electrochemistry of lead. Atomic number - 82 Density g/mL 11 .4 Atomic weight u 207 .2 Melting point K 600 .6 Bonding radius A 1 .47 Boiling point K 2023 Atomic radius A 1 .81 Heat of vaporization kJ/mol 177 .7 Ionization Potential V 7 .416 Heat of fusion kJ/mol 4 .799 Electronegativity - 2 .33 Specific heat J/gK 0 .13 The oxide is amphoteric. Crystal are face centered cubic. Electron config. : [Xe] 4f14 5d10 6s2 6p2
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