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  4. A nuclide of an alkaline earth metal undergoes radioactive decay by emission of three α -particles in succession. The group of the periodic table to which the resulting daughter element would belong to

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Q. A nuclide of an alkaline earth metal undergoes radioactive decay by emission of three $ \alpha $ -particles in succession. The group of the periodic table to which the resulting daughter element would belong to

JIPMERJIPMER 2007Classification of Elements and Periodicity in Properties

Solution:

After decay of radioactive element, the last element (stable) $Pb$ is obtained which belongs to group $14$ of periodic table.