| Krypton | |
| Electrons per shell | 2,8,18,8 |
| Electron Configuration | [Ar] 3d10 4s2 4p6 ![]() |
| Ground state | 1S0 |
| Atomic Volume | 38.9 cm3 mol-1 |
| Electronegativity | 3.00 |
| Magnetic ordering | Non-magnetic |
| Mass magnetic susceptibility | -4.4 x 10-9 |
| Molar magnetic susceptibility | -3.69 x 10-10 |
| Speed of sound | gas; 220. liquid; 1120 m s-1 |
Thermal Properties |
|
| Enthalpy of Atomization | No data. |
| Enthalpy of Fusion | 1.64 kJ mol-1 |
| Enthalpy of Vaporisation | 9.05 kJ mol-1 |
| Heat Capacity | 20.786 J mol-1 K-1 |
| Thermal Conductivity | 9.43 W m-1 K-1 |
| Thermal Expansion | No data. |
| Critcal Temperature | 209.4 K (-63.7°C) |
| Critcal Pressure | No data. |
| Adiabatic index | No data. |
Electrical Properties |
|
| Electrical resistivity | No data. |
| Electrical conductivity | ? 106/cm Ω |
Chemical Properties |
|
| Ionization Potential | |
| 13.999 | |
| 24.359 | |
| 36.95 | |
Optical Properties |
|
| Refractive Index (gas) | 1.000427 |
Energy Levels |
|
| 12.649 KeV | |
| 12.598 KeV | |
| 14.112 KeV | |
| 14.3116 KeV | |
| 14.102 KeV | |
| 1.586 KeV | |
| 1.586 KeV | |
| 1.6366 KeV | |
| 1.7107 KeV | |
| 1.697 KeV | |
| 1.438 KeV | |
| 1.3872 KeV | |
Atomic Radii |
|
| 103 pm | |
| 88 pm | |
| 110 pm | |
| 202 pm | |
| 108 pm | |
| No data. | |
Oxidation States |
|
| Kr0, Kr+2 | |
Ionisation Energies (kJ mol-1) ![]() |
|
| 1350.7 | |
| 2350 | |
| 3565 | |
| 5070 | |
| 6240 | |
| 7570 | |
| 10710 | |
| 12200 | |
| 22229 | |
| 28900 | |
Vapour Pressure |
||||||
| P (Pa) | 1 | 10 | 100 | 1K | 10K | 100K |
| T (K) | 59 | 65 | 74 | 84 | 99 | 120 |
Crystal Structure |
|
| Cubic close packed | |
![]() |
a = 570.6 pm |
| b = 570.6 pm | |
| c = 570.6 pm | |
| α = 90° | |
| β = 90° | |
| γ = 90° | |