Element: radon |
Name : radon |
Symbol : Rn |
Atomicnumber : 86 |
Relativeatomicmass : [ 222 ] (longest lived isotope) |
Standardstate : gas at 298 K (the heaviest known mononuclear gas at 298 K) |
Appearance : colourless |
Classification : Non-metallic |
Groupinperiodictable : 18 |
Groupname : Noble gas |
Periodinperiodictable : 6 |
Blockinperiodictable : p |
Shellstructure : 2.8.18.32.18.8 |
CASRegistry : 10043-92-2 |
Description : The main hazard is from inhalation of the element and its decay products which are collected on dust in the air. |