The statement of the nucleus of an atom split is "collision with a high-speed particle."
What is nucleus of an atom?
The atomic nucleus is a positively charged area in the atom's centre. The nucleus of an atom is made up of two types of subatomic particles, such as protons and neutrons, that are densely packed together.
Nuclear fission is the process by which an atom's nucleus breaks into two or more smaller nuclei. The fission process frequently produces gamma photons and releases a considerable quantity of energy.
Interesting things can happen when they encounter. In most cases, atoms collide with a fast particle and interact with one another to generate a diverse variety of low-energy, ordinary particles. Heavier particles or energetic particles combined with their anti-particles are occasionally created.
Hence the correct answer is collision with a high-speed particle.
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