What is the range of particle size in colloidal solution in nm?

Explanation

**Step-by-Step Solution:**

1. **Understanding Colloidal Solutions**:
- Colloidal solutions consist of small particles that are dispersed throughout a continuous medium. These particles are larger than those in true solutions but smaller than those in suspensions.

2. **Defining Particle Size**:
- The size of the particles in a colloidal solution is a key characteristic that distinguishes it from other types of mixtures.

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