A nucleus of lead-212 (82212Pb_{82}^{212}\text{Pb}82212Pb) undergoes a decay chain consisting of a single β−\beta^{-}β− decay followed by a single α \alpha\,α decay to form a final daughter nucleus. How many neutrons are in this final daughter nucleus?
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Practise Edexcel GCSE Physics Atomic structure and ionising radiation with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Physics (1PH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.