Practice Isotopes (1.3) - Unit 2: Atomic Structure

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6 sample questions

Question 1.
What is an isotope?
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Think about the definition of chemical elements.
Question 2.
How do you determine the atomic weight of an element?
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Consider factors that contribute to atomic mass.
3Question 3.
What defines an isotope?
- A: Same number of protons, different neutrons
- B: Different number of protons, C: Same mass number
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Focus on neutron variations.
4Question 4.
True or False: All isotopes of a chemical element have identical chemical properties.
- True
- False
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Remember that chemical behavior is influenced by protons.
Question 5.
Discuss the implications of neutron-to-proton ratios in relation to isotopic stability. Why might certain isotopes be viable for medical imaging, while others are not?
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Consider the long-term effects of stability and decay.
Question 6.
Calculate the average atomic mass for an element with three isotopes: Isotope A (mass 10.0129 u, abundance 20%), Isotope B (mass 11.0093 u, abundance 50%), Isotope C (mass 12.0000 u, abundance 30%).
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Convert percentages to fractions by dividing by 100.

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