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IB IBO Chemistry October 2023

QP-202310-Chemistry-P1（TZ2）-SL · Question 5

#atomic #structure
Question (excerpt):
5. Gallium (Ar = 69.72) consists of two stable isotopes, Ga-69 and Ga-71. What is the relative abundance of Ga-71? A. 36 % B. 40 % C. 60 % D. 64 %

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