Concept explainers
The atomic number of the resulting nucleas after emitting an alpha particle.
Answer to Problem 2TE
The atomic number of the resulting is nucleas is 88.
Explanation of Solution
The proton is located in the nucleus of the atom, thereby alpha decay involves the emitting of alpha element from the nucleas of the atom including 2 protons and 2 electrons. When a nuclei of the atom ejects an alpha particle, then changes will be seen in the atomic number as it decreases by 2 protons and mass numbers decreases by four ( 2 electrons and 2 neutrons).
When thorium decays by emitting an alpha particle, it means 2 protons and 2 neutrons are ejected, so the resulting nucleus's atomic number is increased by 2 protons. The resulting element has 88 atomic number.
Conclusion:
Therefore, the atomic number of the resulting is nucleas is 88.
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