Physics (AS & A Level) · Oct / Nov 2020 · Paper 43 · Question 12
9702
As printed in the paper
The question as text
Iodine-131 (131 53 I) is a radioactive isotope with a decay constant of 9.9 × 10–7 s–1.
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12(a)(i)[2]
12(a)(ii)[2]
12(b)[2]
12(c)[3]
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