COMEDK · Physics · 29. Nuclear Physics
During \(\alpha\)-decay, atomic mass of parent nuclei is
- A decreased by 2 units
- B increased by 2 units
- C decreased by 4 units
- D increased by 4 units
Answer & Solution
Correct Answer
(C) decreased by 4 units
Step-by-step Solution
Detailed explanation
An \(\alpha\)-particle is a helium nucleus, denoted as \(_{2}^{4}\text{He}\). In an \(\alpha\)-decay process, a parent nucleus \(_{Z}^{A}\text{X}\) emits an \(\alpha\)-particle to form a daughter nucleus \(_{Z-2}^{A-4}\text{Y}\). The atomic mass number \(A\) of the parent…
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