Chemical shift in NMR spectroscopy is expressed as delta (δ) or tan (t) scale. Choose the correct relationship between δ and t:
Correct answer: A. δ = 10 - t
- A. δ = 10 - t
- B. δ = 10 + t
- C. t = δ - 10
- D. t = 10 - δ
Explanation
In NMR spectroscopy, δ (delta) represents the chemical shift, while t is another scale used to express the same concept. The correct relationship between these two scales is δ = 10 - t. This means that to convert from the t scale to the δ scale, you subtract the tan value from 10. The other options are incorrect because they either add instead of subtract, reverse the roles of δ and t, or suggest a subtraction that doesn't reflect the true relationship.
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Spectroscopy studies how substances absorb, emit or interact with electromagnetic radiation. Coverage includes ultraviolet-visible absorption, infrared identification of functional groups, Beer-Lambert law, spectral interpretation and the use of spectroscopic data to identify or determine the concentration of chemical substances.
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