|
|
| Oxygen | |
| Electron Configuration | 2,6 |
| Electron Configuration | 1s2 2s2 2p4 |
| Ground state | 3P2 |
| Atomic Volume | 14 g/cm3 |
| Electronegativity | 3.44 |
| Magnetic ordering | Paramagnetic |
| Mass magnetic susceptibility | 1.335 x 10-6 |
| Molar magnetic susceptibility | 2.13592 x 10-8 |
| Speed of sound | 330 m s-1 |
 Thermal Properties |
|
| Enthalpy of Atomization | 249.4 kJ mol-1 @25°C |
| Enthalpy of Fusion | 0.444 kJ mol-1 |
| Enthalpy of Vaporisation | 6.82 kJ mol-1 |
| Heat Capacity | (O2) 29.378 J mol-1 K-1 |
| Thermal Conductivity | 26.58 W m-1 K-1 |
| Thermal Expansion | No data. |
| Electrical Properties |
|
| Electrical resistivity | No data. |
| Electrical conductivity | No data. |
| Chemical Properties |
|
| Electrochemical Equivalent | 0.29847 g Ah-1 |
| Valence Electron Potential (-eV) | -20.6 |
| Ionization Potential | |
 First
|
13.618 |
| Second
|
35.117 |
| Third
|
54.934 |
| Incompatibilities | Oxidizable materials. |
| Flammability |
|
| Non-flammable gas (Oxidizer)
|
| Optical Properties |
|
| Refractive Index (gas) | 1.000271 |
| Energy Levels |
|
| Kα1 (intensity 100) |
0.5249 KeV |
| Atomic Radii |
|
| Empirical
|
60 pm |
| Bohr Radius
|
48 pm |
| Covalent Radius
|
73 pm |
| Van der Waals
|
152 pm |
| Triple covalent
|
53 pm |
| Metallic
|
No data. |
| Ionic Radii (Å) |
||||
| Charge | Coordination | Crystal | Ionic | Key |
| -2 | II | 1.21 | 1.35 | |
| III | 1.22 | 1.36 | ||
| IV | 1.24 | 1.38 | ||
| VI | 1.26 | 1.4 | ||
| VIII | 1.28 | 1.42 | ||
| -1 (OH) | II | 1.18 | 1.32 | |
| III | 1.2 | 1.34 | ||
| IV | 1.21 | 1.35 | E | |
| VI | 1.23 | 1.37 | E | |
| 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
|
O-2 |
| Other
|
O-1, O0, O+1, O+2 |
Ionisation Energies (kJ mol-1)  |
|
| M - M+ |
1313.9 |
| M+ - M2+ |
3388.2 |
| M2+ - M3+ |
5300.3 |
| M3+ - M4+ |
7469.1 |
| M4+ - M5+ |
10989.3 |
| M5+ - M6+ |
13326.2 |
| M6+ - M7+ |
71333.3 |
| M7+ - M8+ |
84076.3 |
| Covalent Bonds (kJ mol-1) |
|
| 146
|
O-O |
| 498
|
O=O |
| 200
|
O-N |
| 360
|
O-C |
| 743
|
O=C |
| Vapour Pressure |
||||||
| P (Pa) | 1 | 10 | 100 | 1K | 10K | 100K |
| T (K) | 61 | 73 | 90 | |||
| Crystal Structure |
|
| Structure
|
Monoclinic |
 |
a = 540.3 pm |
| b = 342.9 pm | |
| c = 508.6 pm | |
| α = 90° | |
| β = 132.530° | |
| γ = 90° | |