Particle size of a substance in water is 200 nm. What is the nature of the solution?

Explanation

To determine the nature of the solution when the particle size of a substance in water is 200 nm, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Particle Size Ranges**:
- True solutions have particle sizes ranging from 0.01 nm to 1 nm.
- Colloidal solutions have particle sizes ranging from 1 nm to 1000 nm.
- Suspensions have particle sizes greater than 1000 nm.
...