No, the atomic mass of oxygen is not 32. Oxygen exists as a diatomic molecule (O2), which means two oxygen atoms are chemically bonded together. However, when we refer to the atomic mass of an element, such as oxygen, we are referring to the average atomic mass of all naturally occurring isotopes of that element.
The atomic mass of oxygen is approximately 16. It is the weighted average of the masses of different isotopes of oxygen, taking into account their natural abundances. Oxygen has three stable isotopes: oxygen-16, oxygen-17, and oxygen-18. Oxygen-16 is the most abundant isotope, with an abundance of about 99.76%. Oxygen-17 and oxygen-18 have much lower abundances.
Therefore, the atomic mass of oxygen (16) represents the average mass of all the naturally occurring isotopes, including both O16 and the less abundant isotopes. The fact that oxygen forms diatomic molecules (O2) does not change its atomic mass, which is defined based on the average mass of all isotopes.