Question

value: 3
nuclear ___ is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nucleus and subatomic particles (neutrons or protons).
a. fusion
b. fission
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Explanation:

To solve this, we recall the definitions of nuclear fusion and fission. Nuclear fusion is the process where two or more atomic nuclei combine to form new atomic nuclei and subatomic particles. Nuclear fission is the splitting of a heavy nucleus into smaller nuclei. The question describes combining nuclei, so it's fusion.

Answer:

a. fusion