|
|
| Plutonium | |
| Electron Configuration | 2,8,18,32,24,8,2 |
| Electron Configuration | [Rn] 5f6 7s2 |
| Ground state | 7F0 |
| Atomic Volume | 12.32 g/cm3 |
| Electronegativity | 1.28 |
| Magnetic ordering | No data |
| Mass magnetic susceptibility | 3.14 x 10-8 |
| Molar magnetic susceptibility | 7.662 x 10-9 |
| Speed of sound | 2260 m s-1 |
 Thermal Properties |
|
| Enthalpy of Atomization | 360 kJ mol-1 @25°C |
| Enthalpy of Fusion | 2.8 kJ mol-1 |
| Enthalpy of Vaporisation | 343.5 kJ mol-1 |
| Heat Capacity | 35.5 J mol-1 K-1 |
| Thermal Conductivity | 6.74 W m-1 K-1 |
| Thermal Expansion | 46.7 μm m-1 K-1 |
| Elastic Properties |
|
| Poisson ratio | 0.21 |
| Shear modulus | 43 GPa |
| Young's modulus | 96 GPa |
| Electrical Properties |
|
| Electrical resistivity | 1.50 x 10-6 Ω m |
| Electrical conductivity | No data. |
| Chemical Properties |
|
| Electrochemical Equivalent | 2.2765 g Ah-1 |
| Valence Electron Potential (-eV) | 64.9 |
| Ionization Potential | |
 First
|
6.06 |
| Energy Levels |
|
| Lα1 (intensity 100) |
14.2786 KeV |
| Lα2 (intensity 10) |
14.0842 KeV |
| Lβ1 (intensity 38) |
18.2937 KeV |
| Lβ2 (intensity 14) |
17.2553 KeV |
| Lβ3 (intensity 2) |
18.5362 KeV |
| Lβ4 (intensity 2) |
17.5547 KeV |
| Lγ1 (intensity 8) |
21.4173 KeV |
| Lγ2 (intensity 2.7) |
21.7242 KeV |
| Lγ3 (intensity 2) |
16.33 KeV |
| Ll (intensity 6) |
12.1262 KeV |
| Atomic Radii |
|
| Empirical
|
175 pm |
| Bohr Radius
|
No data. |
| Covalent Radius
|
No data. |
| Van der Waals
|
No data. |
| Triple covalent
|
No data. |
| Metallic
|
159 pm |
| Ionic Radii (Å) |
||||
| Charge | Coordination | Crystal | Ionic | Key |
| 3 | VI | 1.14 | 1 | R |
| 4 | VI | 1 | 0.86 | R |
| VIII | 1.1 | 0.96 | ||
| 5 | VI | 0.88 | 0.74 | E |
| 6 | VI | 0.85 | 0.71 | R |
| 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 |
|
| Main
|
Pu+4 |
| Other
|
Pu+2, Pu+3, Pu+5, Pu+6, Pu+7 |
Ionisation Energies (kJ mol-1)  |
|
| M - M+ |
585 |
| Vapour Pressure |
||||||
| P (Pa) | 1 | 10 | 100 | 1K | 10K | 100K |
| T (K) | 1756 | 1953 | 2198 | 2511 | 2926 | 3499 |
| Crystal Structure |
|
| Structure
|
Monoclininc |
 |
a = 618.3 pm |
| b = 482.2 pm | |
| c = 1096.3 pm | |
| α = 90° | |
| β = 101.790° | |
| γ = 90° | |