What is o22?

As of my knowledge cutoff date in September 2021, o22 refers to Oxygen 22, which is a stable isotope of oxygen. Oxygen is a chemical element with the symbol O and atomic number 8. Oxygen 22 has a mass number of 22 and is a radioactive isotope with a half-life of approximately 2.25 seconds.

Oxygen 22 is not found in nature and is typically produced artificially in nuclear reactors or particle accelerators. It is used in scientific research, particularly in nuclear physics experiments and studies of nuclear reactions.

Please note that there may be other contexts or meanings associated with the term o22 that are outside the scope of this response.