![]() ![]() If instead you fuse very light nuclei to get bigger products, energy is again released because the nucleons in the products are more tightly bound than in the original nuclei. Because easy-controlling fission is used in nuclear power. Both fusion and fission are nuclear processes that produce an enormous amount of energy through different physical mechanisms. Fission is the splitting of an unstable and heavy nucleus into lighter nuclei, while fusion is the process of combining two light nuclei for releasing large amounts of energy. Thus, if you split a nucleus that is much larger than iron into smaller fragments, you will release energy because the smaller fragments are at a lower energy than the original nucleus. Fission and fusion both are nuclear reactions and produce much energy, but their applicability is not the same. It turns out that the most tightly bound atomic nuclei are around the size of iron-56. ![]() If a nuclear reaction produces nuclei that are more tightly bound than the originals, then the excess energy will be released. ![]() The key is in how tightly the nucleons are held together in a nucleus. Nuclear fission is a process in which a nucleus splits into two smaller nuclei. #""_5^10"B" + _2^4"He" → _7^13"N" + _0^1"n" # + energy The main difference is that fission is the splitting of a heavy, unstable nucleus into two smaller nuclei, while fusion reactions involve combining two light. Nuclear fusion is a process in which two nuclei join to form a larger nucleus. Fusion and fission are similar in that they both release large amounts of energy. ![]()
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