What is o16?

O16 is a stable isotope of the element oxygen, meaning it does not undergo radioactive decay. It has 8 protons and 8 neutrons in its nucleus. Its atomic number is 8, and its symbol is 16O. Oxygen-16 is the most abundant isotope of oxygen, making up over 99% of all naturally occurring oxygen on Earth. It has a natural abundance of 99.76% and is commonly used as a reference standard in mass spectrometry. The properties of oxygen-16 are important in many areas of science, including atmospheric chemistry, geology, and biology. It is used in medicine for oxygen therapy and in industrial processes like steel production and welding.