Show Elements
ID 14
Symbol O
Name Oxygen
Density (g/cm<sup>3</sup>) 1.429
Atomic Number 8
Molecular Weight 16
Melting Point (K) 54.8
Boiling Point (K) 90.2
Specific Heat Capacity (J/kg K) 919
Electro Negativity 3.44
Curie temperature (K)
Bohr Magneton (J/T)
Magnetization Saturation (MA m<sup>-1</sup>)
Crystal Structure ​Base-centered Monoclinic
Appearance Gas, colorless
Element category Reactive nonmetal
Magnetic ordering Paramagnetic
Discovery Carl Wilhelm Scheele (1774)
General Information Oxygen is the third most abundant element in the universe and makes up nearly 21% of the earth's atmosphere. Oxygen accounts for nearly half of the mass of the earth's crust, two thirds of the mass of the human body and nine tenths of the mass of water. Large amounts of oxygen can be extracted from liquefied air through a process known as fractional distillation. Oxygen can also be produced through the electrolysis of water or by heating potassium chlorate (KClO3).
Image source
General informations source