Answer: Daughter product that is formed after the beta-minus decay of \(_{81}^{206}\textrm{Th}\) is \(_{82}^{206}\textrm{Pb}\)
Explanation: Beta-minus decay is a process in which an unstable radioactive atom forms a stable molecule.
In this decay, a neutron results in the formation of a proton and an electron.
Beta-minus decay of \(_{81}^{206}\textrm{Th}\) follows:
\(_{81}^{206}\textrm{Th}\rightarrow _{82}^{206}\textrm{Pb}+_{-1}^0\beta\)
Daughter product is \(_{82}^{206}\textrm{Pb}\)