A, O2 (oxygen)
O2 is the most common allotrope of oxygen, also known as oxygen or dioxide. It consists of two oxygen atoms enjoying electrons through * * * to form a diatomic molecular structure. Oxygen is colorless, odorless and odorless, accounting for about 2 1% in the earth's atmosphere. Oxygen is very important for maintaining the operation of life, and it is the gas needed by many living things in the process of breathing.
Second, O3 (ozone)
O3 is another allotrope of oxygen, also called ozone or trioxide. It is composed of three oxygen atoms, forming a relatively stable molecular structure of three atoms. Ozone has a special smell and strong oxidation. In the atmosphere, ozone mainly exists in the ozone layer, which plays the role of absorbing and shielding solar radiation. Ozone is also a strong oxidant, which is often used in water treatment, disinfection and air purification.
Three. O4 (Tetraoxide)
O4 is the least common oxygen allotrope, also known as tetroxide. It is composed of four oxygen atoms, forming a stable four-atom molecular structure. Although tetraoxide rarely exists at room temperature, it can be observed under extreme conditions, such as low temperature and high pressure. Tetraoxide has high activity and strong oxidation, and has certain application in chemical research.
Summary:
Oxygen allotropes include O2, O3 and O4. O2 is the most common oxygen, and it is a necessary gas for maintaining life and breathing. Ozone, which mainly exists in the ozone layer, absorbs and shields solar radiation. O _ 4 is dioxide, which rarely exists under normal environmental conditions, but can be observed under extreme conditions. These allotropes have important functions and research values in the fields of chemistry and environment.
Active oxygen, also known as triatomic oxygen, is named after its fishy smell. Its molecular formula is O3, which is an allotrope of oxygen. Active oxygen has been discovered for 100 years. At an altitude of 0/5-25 km from the earth's surface, the ROS layer around the earth's outer space is formed due to the ultraviolet radiation of the sun. This thick ROS layer is the umbrella for human survival.