Krypton
| Basic Information | Crystal Structure | Isotope | Facts | Related Links |
| Symbol: | Kr |
| Atomic Number: | 36 |
| Atomic weight: | 83.8u |
| Melting Point: | 115.78K |
| Boiling Point: | 119.8K |
| Number of Protons/Electrons: | 36 |
| Number of Neutrons: | 48 |
| Classification: | Noble Gas |
| Crystal Structure: | Face Centered Cubic |
| Density at 293 K: | 3.74g/mL |
| Color: | Colorless gas |
| Bonding radius: | 1.12A |
| Atomic radius: | 1.03A |
| Ionization Potential: | 13.999V |
| Electronegativity: | |
| Heat of vaporization: | 9.029kJ/mol |
| Heat of fusion: | 1.638kJ/mol |
| Specific heat: | 0.248J/gK |
| Electron configuration: | [Ar]3d104s24p6 |
Crystal Structure
| Isotope | Half Life |
| Kr78 | Stable |
| Kr79 | 1.45 days |
| Kr80 | Stable |
| Kr81 | 210000.0 years |
| Kr82 | Stable |
| Kr83 | Stable |
| Kr83m | 1.86 hours |
| Kr84 | Stable |
| Kr85 | 10.73 years |
| Kr85m | 4.48 hours |
| Kr86 | Stable |
| Kr87 | 1.27 hours |
| Kr88 | 2.84 hours |
| Kr89 | 3.15 minutes |
| Kr90 | 32.3 seconds |
| Date of Discovery: | 1898 |
| Discoverer: | Sir William Ramsey |
| Uses: | Lighting |
| Obtained From: | production of liquid air |