What are Nuclear reactions ? Give one example. Name the laws which are obeyed by these reactions.
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Conservation Laws in Nuclear Reactions
Conservation of nucleons. The total number of nucleons before and after a reaction are the same.Conservation of charge. The sum of the charges on all the particles before and after a reaction are the sameConservation of momentum. The total momentum of the interacting particles before and after a reaction are the same.Conservation of energy. Energy, including rest mass energy, is conserved in nuclear reactions.
An α-particle is a helium nucleus. It contains 2 protons and 2 neutrons, for a mass number of 4.
During α-decay, an atomic nucleus emits an alpha particle. It transforms (or decays) into an atom with an atomic number 2 less and a mass number 4 less.
Thus, uranium-238 decays through α-particle emission to form thorium-234 according to the equation:
238U→234Th+4He
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Conservation of nucleons. The total number of nucleons before and after a reaction are the same.Conservation of charge. The sum of the charges on all the particles before and after a reaction are the sameConservation of momentum. The total momentum of the interacting particles before and after a reaction are the same.Conservation of energy. Energy, including rest mass energy, is conserved in nuclear reactions.
An α-particle is a helium nucleus. It contains 2 protons and 2 neutrons, for a mass number of 4.
During α-decay, an atomic nucleus emits an alpha particle. It transforms (or decays) into an atom with an atomic number 2 less and a mass number 4 less.
Thus, uranium-238 decays through α-particle emission to form thorium-234 according to the equation:
238U→234Th+4He
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