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6 Radioactivity

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Question 7

A geologist reconstructs part of a decay chain in a mineral sample. The product at the end of this part has mass number 206 and atomic number 82. This product was made by alpha decay of an intermediate nucleus. The intermediate nucleus was made by beta-minus decay of the parent nucleus.

What is the neutron number of the parent nucleus?

[1]
A

124124124

B

125125125

C

126126126

D

127127127

Markscheme

6 Radioactivity Questions

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

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