Oxygen (O, Z=8).
Oxygen is a colorless, odorless, tasteless, and extremely reactive gas; in its elemental form, oxygen is found as the diatomic molecule O2; in the liquid phase, it is pale blue. The name of the element is derived from the Latin words oxy and genes, meaning "acid forming" (see explanation below). Oxygen is the most abundant element in the Earth's crust (47%), the second most abundant element in the atmosphere (21%), and the third most abundant element in the universe (for every atom of silicon, there are 22 atoms of oxygen, 3,100 of helium, and 40,000 of hydrogen).
Oxygen (O, Z=8). Oxygen is a colorless, odorless, tasteless, and extremely reactive gas; in its elemental form, oxygen is found as the diatomic molecule O2; in the liquid phase, it is pale blue. The name of the element is derived from the Latin words oxy and genes, meaning "acid forming" (see explanation below). Oxygen is the most abundant element in the Earth's crust (47%), the second most abundant element in the atmosphere (21%), and the third most abundant element in the universe (for every atom of silicon, there are 22 atoms of oxygen, 3,100 of helium, and 40,000 of hydrogen).
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