Consider the isotope Th-228. Write the nuclear equation for the alpha decay of the mentioned isotope.

When a radioactive isotope releases an alpha particle, the atomic number of the atom is

Identify the nuclide produced when neptunium-237 decays by alpha emission: ²³⁷₉₃Np → ⁴₂He + ?

Enter the nuclear equation for the alpha decay of polonium-216 (²¹⁶₈₄Po).

²³⁴₉₂U undergoes alpha decay. What is the atomic number of the resulting element?

Give the symbol for (b) an alpha particle.

Write balanced nuclear equations for the following transformations: (a) bismuth-213 undergoes alpha decay.