Does there seem to be any pattern in the series alpha and beta decays?

Yes, there are observable patterns in alpha and beta decays. Alpha decay typically occurs in heavy nuclei where the emission of an alpha particle (two protons and two neutrons) helps the nucleus achieve greater stability. In contrast, beta decay occurs in neutron-rich or proton-rich nuclei, where a neutron transforms into a proton (beta-minus) or a proton into a neutron (beta-plus), adjusting the neutron-to-proton ratio towards stability. Both decay modes are influenced by the nuclear structure and the forces at play within the nucleus, leading to specific decay chains and patterns in isotopes.