Uranium-238 is radioactive and changes into thorium-234 through the emission of a particle. $^{{238}}_{{92}}\text{U} \rightarrow ^{{234}}_{{90}}\text{Th} + \text{particle}$ Which particle is released in this process?
- Aan $\alpha$-particle
- Ba $\beta$-particle
- Ca neutron
- Da proton