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6 Radioactivity

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Question 23

A nucleus undergoes one beta-minus decay followed by one alpha decay. The final nucleus has a mass number of 204 and an atomic number of 79.

Which pair describes the original nucleus?

[1]
A

mass number 204204204; atomic number 808080

B

mass number 204204204; atomic number 787878

C

mass number 208208208; atomic number 828282

D

mass number 208208208; atomic number 808080

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6 Radioactivity Questions

  1. GCSE
  2. /Physics
  3. /6 Radioactivity

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