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Oxygen gas is an element.

In the atmosphere is is a diatomic molecule ( O2 ; O=O).

It also forms a triatomic molecule , ozone (O3), found in the upper atmosphere.

It is part of a mixture of gases in the atmosphere. The others being nitrogen, and minute amounts of carbon dioxide, water vapour , the noble gases, methane, sulphur dioxide.

It does NOT form a compound in the atmosphere. However, it does form a compound with many metals as their oxides. e.g. Iron oxide (Fe2O3).

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lenpollock

Lvl 16
1y ago

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