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2 marksAtomic Mass

CAPE Physics Unit 2 · 2016 · Paper 2 · Question 6(b)

Cobalt-60 is obtained by irradiating natural Cobalt-59 with fast neutrons, then emits a beta particle to form nickel. (Atomic numbers: \text{Co} - 27, \text{Ni} - 28). Complete the nuclear equations for this process: Equation I: \text{Co} + \text{n} \rightarrow _____ Equation II: _____ \rightarrow _____

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  1. 6(a)Describe the Geiger–Marsden experiment and discuss the evidence it provides for the nuclear model of the atom.[8 marks]
  2. 6(c)Cobalt-60 has a half-life of 5.27 years. Beginning with an initial sample of 200 grams of pure Co-60, determine how many grams of nickel would be found after…[5 marks]

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