Rankers Physics

Nucleus: Practice Problem & Solution

A nucleus represented by the symbol $^{A}_{Z}X$ has: (2004)
Z protons and A - Z neutrons
Z protons and A neutrons
A protons and Z - A neutrons
Z neutrons and A - Z protons

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:

In standard nuclear notation $^{A}_{Z}X$, Z represents the atomic number (number of protons) and A represents the mass number (total number of protons and neutrons). Hence, the number of neutrons is $A - Z$.

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