Emission of an alpha paritcle leads to a

Radon is formed by emission of alpha -particles by

In the transformation of ""_(92)^(238)U to ""_(92)^(234)U , if one emission is an alpha -particle, what should be the other emission ?

In the transformation of ""_(92)""^(238)U to ""_(92)""^(234)U , if one emission is an alpha particle, what should be the other emission(s)?