01 About Oxygen
The third most abundant element in the universe. Liquid oxygen is pale blue and is magnetic - it's the oxidiser in rocket engines.
02 Physical Properties
State at room temperature๐จ Gas
Melting point-218.8 ยฐC
Boiling point-183 ยฐC
Density0.00143 g/cmยณ
Atomic mass15.999 u
Electron configuration2,6
Period / GroupPeriod 2, Group 16
BlockP-block
03 Discovery
Oxygen was discovered in 1774 by Priestley.