The diameter of collodal particle is of the order

Options

A. `10^(-3)m`
B. `10^(-6)m` .
C. `10^(-15)m` .
D. `10^(-7)m`

Answer

To determine the diameter of colloidal particles, we need to understand the size range of these particles. Let's break down the solution step by step.

### Step-by-Step Solution:

1. **Understanding Colloidal Solutions**:
- A colloidal solution is a heterogeneous mixture where tiny particles (colloids) are dispersed within a continuous medium (solvent).
- Examples include milk, fog, and ink, which appear homogeneous but consist of dispersed particles.

2. **Size of Colloidal Particles**:
- Colloidal particles are typically very small, with sizes ranging from 1 nanometer (nm) to 1000 nanometers (nm).
- This range can also be expressed in meters for clarity.

3. **Converting Nanometers to Meters**:
- 1 nanometer is equal to \(10^{-9}\) meters.
- Therefore, 1000 nanometers can be converted as follows:
\[ 1000 \, \text{nm} = 1000 \times 10^{-9} \, \text{m} = 10^{-6} \, \text{m} \]

4. **Conclusion on Diameter**:
- The diameter of colloidal particles is generally of the order of \(10^{-6}\) meters.
- Hence, the correct answer to the question is \(10^{-6}\) meters.

5. **Final Answer**:
- The diameter of colloidal particles is of the order of \(10^{-6}\) meters.