What type of magnetic behaviour is shown by a molecule containing unpaired electrons ?

Answer

To determine the type of magnetic behavior shown by a molecule containing unpaired electrons, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Unpaired Electrons**:
- An unpaired electron is an electron that is alone in an orbital. For example, in an s orbital, if there is only one electron present, it is considered unpaired.

2. **Magnetic Behavior**:
- Molecules with unpaired electrons exhibit a specific type of magnetic behavior. This behavior is due to the presence of these unpaired electrons.

3. **Paramagnetism**:
- Molecules that contain one or more unpaired electrons are classified as **paramagnetic**. Paramagnetic substances are attracted to magnetic fields because the unpaired electrons create a net magnetic moment.

4. **Comparison with Diamagnetism**:
- In contrast, if all electrons in a molecule are paired (meaning there are no unpaired electrons), the molecule is classified as **diamagnetic**. Diamagnetic substances are not attracted to magnetic fields and may even be slightly repelled.

5. **Conclusion**:
- Therefore, a molecule containing unpaired electrons will exhibit **paramagnetic behavior**.

### Final Answer:
A molecule containing unpaired electrons shows **paramagnetic behavior**.