Iridium-192 is used in medicine to treat prostate cancer. Iridium-192 has two modes of radioactive decay: 96% of the time it decays by beta emission and 4% of the time it decays by electron capture. What are the daughter nuclides of these two decay processes?

The daughter nuclides of these two decay processes are and .

Explanation:

The beta emission is represented by:

A = (Z + 1) + (n - 1) = is invariant

n: neutron

p: proton

Hence, the daughter nuclide of the beta emission of Ir-192 is:

Now, electron capture is represented by:

A = (Z - 1) + (n + 1) = is invariant

Then, the daughter nuclide of the electron capture of Ir-192 is:

Therefore, the daughter nuclides of these two decay processes are and .

I hope it helps you!

particle   p is an electron and particle q is a neutron