Answer: The daughter element produced will be [tex]_{85}^{217}\textrm{At}[/tex]
Explanation:
Alpha decay is defined as the process in which a heavier nuclei decays into lighter nuclei while producing alpha particle. The alpha particle released carries a mass of 4 units and a charge of +2 units.
The mass number of the element produced is reduced by 4 units and the atomic number of the element produced is reduced by 2 units.
The chemical equation representing the alpha decay of francium-221 follows:
[tex]_{87}^{221}\textrm{Fr}\rightarrow _{85}^{217}\textrm{At}+_2^4\alpha[/tex]
Hence, the daughter element produced will be [tex]_{85}^{217}\textrm{At}[/tex]
