Question

What is the physical state of oxygen at room temperature?

Answer 1

Hint: It refers to a state of matter which has no fixed shape as well as no fixed volume. They have a lower density in comparison with other states of matter.

Complete step-by-step answer:
The physical properties of a specific substance determine its state at room temperature. When both, its normal melting point as well as its normal boiling point are less than room temperature ( $ 20 $ Degrees Celsius ), then the substance is a gas under normal conditions. Normally, the melting point of oxygen is $ - {218^ \circ }C $ ; and its normal boiling point is $ - {189^ \circ }C $ . Oxygen is a gas at room temperature.

If the normal melting point of a substance is below room temperature, the substance is a liquid at room temperature. Oxygen ( $ {O_2} $ ) is considered a gas at room temperature ( $ 273K $ ). It is considered a liquid at $ 90K $ and a solid at $ 54K $ . In case when the normal melting point of a substance is seen below room temperature, the substance is considered a liquid at room temperature.

Since the molecules of oxygen are not attached so strongly along with each other therefore the physical state of oxygen at room temperature, exists in the gaseous state.

Note: A lot of the nonmetals are referred as gases in their elemental form. Elemental hydrogen (H, element ( $ 1 $ ), nitrogen (N, element $ 7 $ ), oxygen (O, element $ 8 $ ), fluorine (F, element $ 9 $ ), and chlorine (Cl, element $ 17 $ ). All of the non metals which are mentioned above are all gases only at room temperature, as well as are found as diatomic molecules (\[{H_2},{\text{ }}{N_2},{\text{ }}{O_2},{\text{ }}{F_2},{\text{ }}C{l_2}\]).