| Curium | |
| Electrons per shell | 2,8,18,32,25,9,2 |
| Electron Configuration | [Rn] 5f7 6d1 7s2 ![]() |
| Ground state | 9D°2 |
| Atomic Volume | 18.28 cm3 mol-1 |
| Electronegativity | 1.28 |
| Magnetic ordering | No data |
Thermal Properties |
|
| Enthalpy of Atomization | No data. |
| Enthalpy of Fusion | No data. |
| Enthalpy of Vaporisation | No data. |
| Heat Capacity | No data. |
| Thermal Conductivity | No data. |
| Thermal Expansion | No data. |
| Critcal Temperature | No data. |
| Critcal Pressure | No data. |
| Adiabatic index | No data. |
Electrical Properties |
|
| Electrical resistivity | No data. |
| Electrical conductivity | ? 106/cm Ω |
Chemical Properties |
|
| Electrochemical Equivalent | 3.0727 g Ah-1 |
| Valence Electron Potential (-eV) | 44.5 |
| Ionization Potential | |
| 6.02 | |
Energy Levels |
|
| 14.9545 KeV | |
| 14.748 KeV | |
| 19.4102 KeV | |
| 18.1011 KeV | |
| 19.6811 KeV | |
| 18.5846 KeV | |
| 22.7242 KeV | |
| 23.0285 KeV | |
| 17.25 KeV | |
| 12.6384 KeV | |
Atomic Radii |
|
| 135 pm | |
| No data. | |
| No data. | |
| No data. | |
| No data. | |
| 174 pm | |
Ionic Radii (Å) |
||||
| Charge | Coordination | Crystal | Ionic | Key |
| 3 | VI | 1.11 | 0.97 | R |
| 4 | VI | 0.99 | 0.85 | R |
| VIII | 1.09 | 0.95 | 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 |
|
| Cm+3 | |
| Cm+2, Cm+4 | |
Ionisation Energies (kJ mol-1) ![]() |
|
| 581 | |
Vapour Pressure |
||||||
| P (Pa) | 1 | 10 | 100 | 1K | 10K | 100K |
| T (K) | 1788 | 1982 | ||||
Crystal Structure |
|
| Hexagonal close packed | |
![]() |
a = 349.6 pm |
| b = 349.6 pm | |
| c = 1133.1 pm | |
| α = 90° | |
| β = 90° | |
| γ = 120° | |