Question

Write the identity of the missing nucleus for the following nuclear decay reaction:
?→237 93Np+42He+00γ

Answer 1

Just need to make sure the mass number and atomic number are balanced on both sides

So on the right side you have mass = 237 + 4
And atomic = 93 + 2

Try to find the appropriate element on the ptable based on atomic number, and write the appropriate nucleus