Polonium Element Properties, Metal, Chalcogen Group, Periodic Table of the Elements
Polonium
|
Polonium Element Properties |
 | | General |
| Name | Polonium |
| Symbol | Po |
| Number | 84 |
| Group Number | 16 |
| Group | Metal, Chalcogen |
| Block | p |
| Density | 9.4 g/cm3 |
| Atomic Weight | 209 g/mol |
| Atomic Volume | 22.23 cm3/mol |
| Discover | 1898 |
|
| States |
| State | Solid |
| Melting Point | 527 K |
| Boiling Point | 1235 K |
| Triple Point | Nil |
| Critical Point | Nil |
| Heat of Fusion | 13 kJ/mol |
| Heat of Vaporization | 102.91 kJ/mol |
|
| Energies |
| First Ionization Energy | 812 kJ/mole |
| Second Ionization Energy | Nil |
| Third Ionization Energy | Nil |
| Electronegativity | 2 |
| Electron Affinity | 180 kJ/mole |
| Specific Heat | 0.12 J/gK |
| Heat Atomization | 144 kJ/mole atoms |
|
| Oxidation and Electrons |
| Shells | 2,8,18,32,18,6 |
| Electron Configuration | [Xe] 4f14 5d10 6s2 6p4 |
| Minimum Oxidation Number | -2 |
| Maximum Oxidation Number | 6 |
| Minimum Common Oxidation Number | -2 |
| Maximum Common Oxidation Number | 4 |
|
| Appearance and Characteristics |
| Crystal Structure | cubic |
| Characteristics | Radioactive; 2 forms |
| Color | blue glow |
| Uses | thermoelectric power |
| Hardness | Nil |
| Toxicity | None |
|
| Reactions |
| Reaction with Air | mild, =>PoO2 |
| Reaction with 6M HCl | mild, =>PoCl2 |
| Reaction with 15M HNO3 | None |
| Reaction with 6M NaOH | None |
|
| Other Forms |
| Number of Isotopes | 1 |
| Hydride | None |
| Oxide | PoO PoO2 |
| Chloride | PoCl2 PoCl4 |
|
| Radius |
| Atomic Radius | 168 pm |
| Ionic Radius (1+ ion) | Nil |
| Ionic Radius (1- ion) | Nil |
| Ionic Radius (2+ ion) | Nil |
| Ionic Radius (2- ion) | Nil |
| Ionic Radius (3+ ion) | Nil |
|
| Conductivity |
| Thermal Conductivity | Nil |
| Electrical Conductivity | Nil |
| Polarizability | 6.8 A3 |
|
| Abundance |
| Source | pitchblende, synthetic |
| Relation Abundance Solar System | Nil |
| Abundance Earth's Crust | -9.7 log |
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