C2H2 is the right answer I believe
The chemical could have more or less of a reaction to the other chemicals in the experiment
The correct answer among the choices given is option B. Radioisotopes are isotopes that emit radiation because they have unstable nuclei. These are radioactive isotopes of an element. They are defined as atoms that contain an unstable combination of neutrons and protons.
Is there any multiple choices?
Answer:
Oceans, Fossil fuels, atmosphere