Spectrum produced due to transition of an electron from M to L shell is

Options

A. absorption
B. emission
C. X-rays
D. continuous

Answer

To determine the type of spectrum produced due to the transition of an electron from the M shell to the L shell, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Electron Shells**:
- Electrons in an atom occupy different energy levels or shells, denoted as K, L, M, N, etc. The K shell is the closest to the nucleus and has the lowest energy, while the M shell is further out and has a higher energy level than the L shell.

2. **Identifying the Transition**:
- In this case, the transition is from the M shell (higher energy level) to the L shell (lower energy level).

3. **Energy Change During Transition**:
- When an electron moves from a higher energy level (M) to a lower energy level (L), it loses energy. This energy is released in the form of a photon.

4. **Type of Spectrum**:
- The emission of photons due to the transition of electrons from a higher energy state to a lower energy state results in an emission spectrum. This spectrum consists of discrete lines corresponding to the specific energies of the emitted photons.

5. **Conclusion**:
- Therefore, the spectrum produced due to the transition of an electron from the M shell to the L shell is an emission spectrum.

### Final Answer:
The correct option is **Option 2: Emission**.

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