Why does oxygen exist in gaseous state?

Answer 1

Oxygen, on earth, is a gas because it is in a gaseous state. On mars, it is liquid. The physical state of any element like hydrogen, nitrogen, oxygen, sodium, sulfur, etc depends on the ambient temperature and pressure. The earth's atmosphere doesn't pressurize oxygen enough for it to turn into a liquid, nor is cold enough for oxygen to condense into a liquid. Hence oxygen is a gas.

Answer 2

Oxygen exists in a gaseous state at room temperature and pressure due to its molecular structure, consisting of two oxygen atoms bound together as O2. The weak intermolecular forces between the O2 molecules allow them to move freely and not be held together tightly, resulting in oxygen being in a gaseous state.

Answer 3

Oxygen condenses into a liquid at -297.31 °F. These temperatures don't occur naturally on Earth.

Answer 4

Ask yourself:

What is the chemical formula for oxygen gas?

Why is that the formula?

What other molecules have a similar formula?

Then you'll have your answer.