Oxygen vs Ozone
Oxygen gas and ozone are the most familiar allotropes of oxygen element. Oxygen is extremely important gas for living organisms. Ozone also protects life on earth, but sometimes it can be harmful too.
Oxygen is the element with the atomic number 8, which is present in group 16 of the periodic table. It has the electron configuration of 1s2 2s2 2p4. Oxygen has three isotopes, 16O, 17O, 18O. Among these, 16O is the most abundant isotope. Oxygen atom has eight electrons, and it can obtain two more electrons from another atom to form a -2 charged anion. Alternatively, two oxygen atoms can share four electrons to form a diatomic molecule (O2) to be stable. Molecular weight of O2 is 32 g mole-1. Molecular oxygen is a colorless, odorless, tasteless gas. There is about 21% of oxygen in the earths’ atmosphere. It is poorly soluble in water and is slightly heavier than air. Oxygen has magnetic properties too. When oxygen gas condenses at -183°C, it becomes a bluish color liquid. Oxygen reacts with all the elements to form oxides except inert gases. Therefore, it is a good oxidizing agent. Oxygen is essential in respiration of living organisms and for the combustion. Oxygen is used in hospitals, welding, and in many other industries.
Three atomic form of oxygen, which is also known as ozone is a common form of oxygen. As the name ozone is heard, we think of the ozone layer. Ozone layer is present in the stratosphere at the higher atmospheric level and it absorbs harmful UV radiation, thus restricting it from getting to the earth surface. However, ozone is harmful at lower atmospheric levels. It acts as an air pollutant (responsible for photochemical smog) and can cause respiratory diseases to humans and animals. Further it damages the plants too. Ozone is less stable than oxygen gas, hence; break into more stable oxygen gas. Ozone is a pale blue color gas with a sharp odor. It is more soluble in non polar solvents and less soluble in water. Two oxygen in the ozone are bound with two covalent bonds, and there is a dative bond between one oxygen atom with another oxygen atom. The central oxygen atom has sp2 hybridization with one lone pair. Ozone has the bent geometry. It is a polar molecule and shows resonance stabilization. Thus, the O-O bond length is similar between three atoms. Since it is a strong oxidizing agent, Ozone is highly reactive. Ozone is producing from oxygen when there is sunlight.
What is the difference between Oxygen and Ozone?
• Oxygen is a diatomic gaseous molecule of oxygen element, whereas ozone is a tri atomic molecule of oxygen.
• Oxygen is a colorless gas, but ozone is a pale blue color gas.
• Ozone gas at lower atmospheric levels can be harmful. But oxygen is not a harmful gas.
• In atmosphere oxygen gas is found in much higher quantities than ozone.
• Ozone is less stable than oxygen.
• The oxidation ability of ozone is higher than that of oxygen.
• Ozone can absorb harmful UV light (UV-B), but oxygen cannot.