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To which radioactive families do the fol...

To which radioactive families do the following nuclides belong?
`.^(222)Rn`, `.^(228)Ra`, `.^(307)Pb`, `.^(209)Bi`, `.^(233)Pa`

Text Solution

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`.^(222)Rb` belongs to `(4n + 2)` family, i.e., uranium family
`.^(228)Ra` belongs to `(4n)` family, i.e., throium family,
`.^(207)Pb` belongs to `(4n + 3)` family , i.e., actinium family
`.^(209)Bi` belongs to `(4n + 1)` family, i.e., neptunium family.
`.^(233)Pa` belongs to `(4n + 1)` family, i.e., neptunium family.
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