Final answer:
In the context of spectroscopy, overlapping or undistinguishable peaks are referred to as beta peaks (β). The Greek alphabet is used to name different types of peaks in spectral data.
Step-by-step explanation:
The question relates to the designations used in spectroscopy for peaks that are overlapping or undistinguishable. When peaks overlap in a spectrum and cannot be distinguished from one another, they are often referred to as beta peaks.
In spectroscopy, the Greek alphabet is used to name different types of peaks or signals. For example:
- Alpha peaks (α) typically refer to the first or primary signal.
- Beta peaks (β) may refer to secondary signals or, in this context, to overlapping or undistinguishable peaks.
- Gamma peaks (γ) and Delta peaks (Δ) have other specific meanings depending on the context within the spectrum.
Therefore, the correct answer to the question, "What letter do you give peaks that are overlapping or undistinguishable?" is b. Beta peaks.