Answer :
Final answer:
Alpha decay is a radioactive process where an unstable nucleus loses two protons and two neutrons, changing into a different element with adjusted atomic and mass numbers.
Explanation:
Alpha Decay is a type of radioactive decay where an unstable nucleus loses two protons and two neutrons, transforming into a different element with an atomic number lower by two and a mass number lower by four. For example, when uranium-238 undergoes alpha decay, it becomes thorium-234.
During alpha decay, the parent nucleus emits an alpha particle, which is essentially a helium nucleus, resulting in the formation of daughter nuclei. The process leads to a change in the element as it moves two squares left and two squares down on the chart of the nuclides.
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