| Polonium | |
| Electrons per shell | 2,8,18,32,18,6 |
| Electron Configuration | [Xe] 4f14 5d10 6s2 6p4 ![]() |
| Ground state | 3P2 |
| Atomic Volume | 22.23 cm3 mol-1 |
| Electronegativity | 2.0 |
| Magnetic ordering | Non-magnetic |
Thermal Properties |
|
| Enthalpy of Atomization | 134 kJ mol-1 @25°C |
| Enthalpy of Fusion | 10 kJ mol-1 |
| Enthalpy of Vaporisation | 100.8 kJ mol-1 |
| Heat Capacity | 26.4 J mol-1 K-1 |
| Thermal Conductivity | 20 W m-1 K-1 |
| Thermal Expansion | 23.5 μm m-1 K-1 |
| Critcal Temperature | No data. |
| Critcal Pressure | No data. |
| Adiabatic index | No data. |
Electrical Properties |
|
| Electrical resistivity | 4.3 x 10-7 Ω m |
| Electrical conductivity | 0.0219 106/cm Ω |
Chemical Properties |
|
| Electrochemical Equivalent | 3.8986 g Ah-1 |
| Valence Electron Potential (-eV) | -12.5 |
| Ionization Potential | |
| 8.42 | |
Energy Levels |
|
| 79.29 KeV | |
| 76.862 KeV | |
| 89.8 KeV | |
| 11.1308 KeV | |
| 11.0158 KeV | |
| 13.447 KeV | |
| 13.3404 KeV | |
| 13.6319 KeV | |
| 13.082 KeV | |
| 15.744 KeV | |
| 16.0702 KeV | |
| 12.085 KeV | |
| 9.6574 KeV | |
Atomic Radii |
|
| 190 pm | |
| 135 pm | |
| No data. | |
| No data. | |
| 129 pm | |
| No data. | |
Ionic Radii (Å) |
||||
| Charge | Coordination | Crystal | Ionic | Key |
| 4 | VI | 1.08 | 0.94 | R |
| VIII | 1.22 | 1.08 | R | |
| 6 | VI | 0.81 | 0.67 | A |
| R, From r3 vs V plots. |
| C, Calculated from bond length - bond strength equations. |
| E, Estimated. |
| *, Most Reliable. |
| M, From Metallic Oxides. |
| A, Ahrens (1952) Ionic radius. |
| P, Pauling's (1960) Crystal Radius. |
Oxidation States |
|
| Po+4 | |
| Po-2, Po+2, Po+6 | |
Ionisation Energies (kJ mol-1) ![]() |
|
| 812 | |
| 1800 | |
| 2700 | |
| 3700 | |
| 5900 | |
| 7000 | |
| 10800 | |
| 12700 | |
| 14900 | |
| 17000 | |
Vapour Pressure |
||||||
| P (Pa) | 1 | 10 | 100 | 1K | 10K | 100K |
| T (K) | (846) | 1003 | 1236 | |||
Crystal Structure |
|
| Cubic | |
![]() |
a = 335.9 pm |
| b = 335.9 pm | |
| c = 335.9 pm | |
| α = 90° | |
| β = 90° | |
| γ = 90° | |