Respuesta :

According to the explanation given in the previous question, now we have an alpha decay, which is similar to a beta decay, but now the result will have the new element being produced and an alpha particle, which is the same as a Helium atom being released:

For Uranium 234:

234/92 U ---> 230/90 Th + 4/2 alfa

Thorium 230 will be produced

For Radium 223:

223/88 Ra ---> 219/86 Rn + 4/2 alfa

Radon 219 will be produced