Element: oxygen |
Name : oxygen |
Symbol : O |
Atomicnumber : 8 |
Relativeatomicmass : 15.999 range: [15.99903, 15.99977] [see notes g r] |
Standardstate : gas at 298 K |
Appearance : colourless as a gas, liquid is pale blue |
Classification : Non-metallic |
Groupinperiodictable : 16 |
Groupname : Chalcogen |
Periodinperiodictable : 2 |
Blockinperiodictable : p |
Shellstructure : 2.6 |
CASRegistry : 7782-44-7 |
Description : Oxygen is a Group 16 element. While about one fifth of the atmosphere is oxygen gas, the atmosphere of Mars contains only about 0.15% oxygen. |