The most common isotope of oxygen has atomic number 8 and atomic mass number 16. another isotope has two extra neutrons. what are the atomic number and atomic mass number of this isotope?
Oxygen-15 is an isotope of oxygen, frequently used in positron emission tomography, or PET imaging. It has 8 protons, 7 neutrons, and 8 electrons. The total atomic mass is 15.0030654 amu.