Edelgassen - Noble gases
Links staat het atoomnummer aangegeven
| edelgas | noble gas | |
| 2 | helium | helium |
| 10 | neon | neon |
| 18 | argon | argon |
| 36 | krypton | krypton |
| 54 | xenon | xenon |
| 86 | radon | radon |
| 2026 Harmen Schoonekamp | contact | Talennet | Webplattegrond |.
"Niet iedereen die rondzweft is verdwaald.
Not all those who wander are lost.
"