I believe the answer is A (it was on another Brainly question as well).
Answer:
No
Explanation:
Argon has a larger atomic radius
It should be B. All of the other choices are used often by abusers
Answer:
bombarding it with an energetic particle
Explanation: nuclear reaction, a change in the identity or characteristics of an atomic nucleus, induced by bombarding it with an energetic particle. The bombarding particle may be an alpha particle, a gamma-ray photon, a neutron, a proton, or a heavy-ion.