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प्रश्न
Distinguish between nuclear fission and fusion giving an example of each.
Give two differences between nuclear fission and nuclear fusion.
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उत्तर
| Nuclear Fission | Nuclear Fusion |
| Nuclear fission is the process by which an atom’s nucleus breaks into two lighter nuclei during a nuclear reaction. | In the process of nuclear fusion, two or more light nuclei collide to create a heavier nucleus. |
| An enormous quantity of energy is produced when each atom divides. | Compared to nuclear fission, nuclear fusion produces energy that is several times more powerful. |
|
Natural fission reactions do not take place in nature. |
Stars and the Sun undergo fusion processes. |
| In a fission reaction, less energy is required to divide an atom. | In a fusion reaction, high energy is required to fuse two or more atoms together. |
| The nuclear fission principle underpins the operation of an atomic bomb. | The hydrogen bomb operates on the nuclear fusion principle. |
| This reaction is possible at ordinary temperature and ordinary pressure. | This reaction is possible only at a very high temperature (≈ 107 K) and a very high pressure. |
Notes
Students should refer to the answer according to their questions.
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संबंधित प्रश्न
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As the mass number A increases, which of the following quantities related to a nucleus do not change?
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Calculate the energy released by 1g of natural uranium assuming 200 MeV is released in each fission event and that the fissionable isotope 235U has an abundance of 0.7% by weight in natural uranium.
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\[\ce{^290_80X ->[\alpha] Y ->[e+] Z ->[\beta-] P ->[e-] Q}\]
In the nuclear emission stated above, the mass number and atomic number of the product Q respectively, are:
