Final answer:
Ozone forms naturally in the upper atmosphere by the action of ultraviolet light on oxygen, occurring primarily in the stratosphere. In laboratory settings, ozone can also be formed through electrical discharges, but the temperature for ozonide formation can vary depending on the reaction conditions.
Step-by-step explanation:
The formation of ozone (O3(g)) from oxygen (O2(g)) is an endothermic reaction that generally takes place under specific conditions. Typically, the reaction is induced through the means of ultraviolet radiation from the sun in the upper atmosphere, especially in the stratosphere, which is approximately 10 to 50 kilometers above the Earth's surface. In the context of a laboratory setting, ozone can also be formed from oxygen through electrical discharges and requires a controlled environment. However, the specific temperature conditions for ozonide formation may vary if ozonides refer to reaction products of organic compounds with ozone; in such cases, the temperature could vary widely based on the specific reaction conditions.
Ozone formation in the upper atmosphere is critical as it protects life on Earth by absorbing most of the sun's harmful ultraviolet radiation. Contrary to the beneficial ozone in the upper atmosphere, ozone at ground level formed by pollutants can be harmful to health and the environment.