Nucleus: Practice Problem & Solution

Solution Explained:

To solve this problem, we apply the core principles of Nucleus. Understanding the underlying formula is key to arriving at the correct answer below:

For every $x$ alpha particles, the atomic number decreases by $2x$. For $2x$ beta particles, the atomic number increases by $2x$. The net change in atomic number Z is zero. Nuclei with the same atomic number are isotopes.