Isotopic Compositions and Del Notation Quiz
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Questions and Answers

When the δ of a sample = 0, what relative isotopic composition does it have?

  • A lower isotopic composition than the standard reference material
  • The same isotopic composition as the standard reference material (correct)
  • A higher isotopic composition than the standard reference material
  • An unknown isotopic composition

    • What does the ‘del’ notation (δ; per mil) compare?

  • Electron configurations of different isotopes of an element
  • Molar concentrations of different isotopes of an element
  • Atomic masses of different isotopes of an element
  • Isotopic compositions of an element in different components of a system (correct)

    • What does the ‘del’ notation (δ) stand for?

  • Ratio comparison
  • Absolute value
  • Per mil (correct)
  • Percentage difference

    • During photosynthesis, is the C in the organic matter that is formed from CO2, typically depleted or enriched in 12C relative to source CO2?

    <p>Enriched in 12C</p> Signup and view all the answers

    What is the isotopic composition of the C in the organic matter formed from CO2 during photosynthesis?

    <p>Enriched in 12C</p> Signup and view all the answers

    In photosynthesis, does the organic matter formed from CO2 contain more 12C or 13C?

    <p>More 12C</p> Signup and view all the answers

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