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what is the meaning of oxygen

Sagot :

A colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. Oxygen forms about 20 percent of the earth's atmosphere, and is the most abundant element in the earth's crust, mainly in the form of oxides, silicates, and carbonates.
Oxygen (O) is a nonmetallic bivalent element. It is approximately 21 percent of the atmosphere by volume. It is colorless, odorless, and tasteless gas. Its atomic number is 8.
 
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