Nucleus: Practice Problem & Solution
A radioactive elements emits one $\alpha$ and $\beta$ particle then mass number of daughter element is: (1999)
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:
The emission of one $\alpha$ particle reduces the mass number by 4. The emission of a $\beta$ particle does not change the mass number. Therefore, the net effect is that the mass number is decreased by 4.
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