Question

Consider the incomplete equation below

mc020-1.jpg

If this equation was completed, which statement would it best support?
Nuclear fusion produces elements that are heavier than helium.
Nuclear fusion produces elements that are lighter than helium.
Nuclear fission produces elements that are heavier than helium.
Nuclear fission produces elements that are lighter than helium

Answer 1

Nuclear fusion produces elements that are heavier than helium.

Reason: Fusion joins light nuclei to form heavier nuclei (e.g., H fuses to He, He nuclei can fuse into still heavier elements), whereas fission splits heavy nuclei into lighter ones.