a researcher is using a particle accelerator in an experiment studying isotopes. how can the researcher…

a researcher is using a particle accelerator in an experiment studying isotopes. how can the researcher change one isotope into a different isotope of the same element?\nby removing valence electrons\nby adding valence electrons\nby adding or removing protons\nby adding or removing neutrons
Answer
Brief Explanations:
Isotopes of the same element have the same number of protons but different numbers of neutrons. Changing the number of neutrons will result in a different isotope of the same element. Adding or removing valence electrons affects the ion - state, not the isotope. Adding or removing protons changes the element itself.
Answer:
by adding or removing neutrons