Chemistry and Radiation

Question

When aluminum 27 is bombarded with a neutron, a gamma rays is emitted. What radioactive isotope is produced?

Answer 1

²⁷₁₃Al + 1 ₀ n --> 28 ₁₃ Al + gamma rays

Hard to write this in this forum. The atomic number of aluminum is 13 and "Aluminum 27" tells us the mass is 27. When we add a neutron, which has a mass of 1 and a charge of zero, you still have aluminum because you still only have 13 protons, but now you have a mass of 28.