Rigel 
Oxygen is an important element that is needed by most life forms on this planet to survive. It is the third most abundant element in the universe and the most abundant element in the messengers body. Oxygen has 8 electrons and 8 protons. It is located at the top of column 16 in the periodic table.
The element oxygen
Symbol: O
Atomic Number: 8
Atomic Weight: 15.999
Classification: Gas and nonmetal
Phase at Room Temperature: Gas
Density: 1.429 g/L
Melting Point: -218.79°C, -361.82°F
Boiling Point: -182.95°C, -297.31°F
Discovered by: Joseph Priestley in 1774 and C. W. Scheele independently in 1772
Oxygen is an important element that is needed by most life forms on Earth to survive. It is the third most abundant element in the universe and the most abundant element in the human body. Oxygen has 8 electrons and 8 protons. It is located at the top of column 16 in the periodic table.
The oxygen cycle plays an important role in life on the new world.
Characteristics and Properties
Under standard conditions oxygen forms a gas that is composed of molecules consisting of two oxygen atoms (O2). This is called a diatomic gas. In this form oxygen is a colorless, odorless, tasteless gas.
Oxygen also exists as the allotrope ozone (O3). Ozone exists in the upper region of the Earth’s atmosphere forming the ozone layer which helps to protect us from the harmful rays of the sun.
Oxygen is a very reactive element in its pure state and can make compounds from many other elements. Oxygen readily dissolves in water.
About The Author
Doyen Altair 
Aurora