Elements can be diagonsed by

Options

A. Emission spectroscopy
B. NMR spectroscopy
C. Infra-red spectroscopy
D. Absorption spectroscopy

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks about the method used to diagnose elements. This implies identifying or analyzing the elements based on their properties or interactions.

2. **Analyzing the Options**:
- **Option A: Emission Spectroscopy**: This technique involves measuring the light emitted by a substance when it is energized. It can be used to identify elements but is not the most common method for diagnosing elements.
- **Option B: NMR Spectroscopy**: Nuclear Magnetic Resonance (NMR) spectroscopy is primarily used for determining the structure of organic compounds and is not typically used for diagnosing elements.
- **Option C: Infrared Spectroscopy**: This method measures the interaction of infrared radiation with matter, which can help identify chemical substances and their functional groups. It is particularly useful for diagnosing elements and their states.
- **Option D: Absorption Spectroscopy**: This technique measures the absorption of light by a substance, which can also be used to identify elements but is less specific than infrared spectroscopy for certain applications.

3. **Identifying the Correct Answer**: Based on the analysis, Infrared Spectroscopy (Option C) is the most suitable method for diagnosing elements due to its ability to identify functional groups and the state of matter.

4. **Conclusion**: The correct answer to the question "Elements can be diagnosed by" is **Option C: Infrared Spectroscopy**.

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