At -200 degrees Celsius, oxygen is in a solid state.
Liquid Oxygen becomes liquid at -183.0 C and solid at −218.79 °C
Air is 21% oxygen so 21% of 200 is 42 oxygen molecules.
The usual state of oxygen is a gas at room temperature and pressure.
Oxygen is a gas at room temperature and pressure.
In peroxides, the oxidation state of oxygen is -1, while in superoxides, the oxidation state of oxygen is -1/2.
Oxygen usually has an oxidation state of -2.
Oxygen is colorless and gas at physical state.
Gas
At -204 degrees Celsius, oxygen is in a solid state, specifically as oxygen ice.
The oxidation state for oxygen in the oxide ion (O2-) is -2. Oxygen typically has an oxidation state of -2 in most of its compounds.
The oxidation state of oxygen in HOF (hypofluorous acid) is +1. Oxygen typically has an oxidation state of -2 in compounds, but in this case, since fluorine is more electronegative, oxygen has an oxidation state of +1 to balance the charge of the molecule.