None of the statements provided are correct.
Here’s why:
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Alpha decay, beta decay, and gamma decay are all types of radioactive decay, but they are not classified as forms of nuclear fission.
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Nuclear fission is a process where a heavy nucleus splits into two or more smaller nuclei, releasing a significant amount of energy, along with neutrons and gamma radiation.
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In contrast:
- Alpha decay involves the emission of an alpha particle (two protons and two neutrons) from the nucleus of an atom.
- Beta decay involves the transformation of a neutron into a proton (or vice versa) with the emission of a beta particle (an electron or positron).
- Gamma decay involves the emission of gamma radiation (high-energy photons) from a nucleus transitioning from a higher energy state to a lower energy state.
Thus, all three types of decay are processes that occur in unstable nuclei but are distinctly different from the process of nuclear fission.
Therefore, the correct conclusion is that alpha decay, beta decay, and gamma decay are not forms of nuclear fission.