Position of non-polar and polar parts in micelle is polar at outer surface but non`-` polar at inner surface (T/F)

Explanation

To determine whether the statement "Position of non-polar and polar parts in micelle is polar at outer surface but non-polar at inner surface" is true or false, we can analyze the structure of micelles step by step.

### Step-by-Step Solution:

1. **Understanding Micelles**:
- Micelles are formed by surfactant molecules when they aggregate in a colloidal solution. Surfactants have two distinct parts: a hydrophilic (polar) head and a hydrophobic (non-polar) tail.

2. **Structure of Micelles**:
- In a micelle, the polar head groups of the surfactant molecules orient themselves towards the surrounding water (the outer surface of the micelle), while the non-polar tails point inward, away from the water.

3. **Position of Polar and Non-Polar Parts**:
- The polar head groups, being hydrophilic, interact favorably with water molecules. Therefore, they are located on the outer surface of the micelle.
- The non-polar tails, being hydrophobic, do not interact well with water and thus are positioned in the interior of the micelle.

4. **Conclusion**:
- Based on the arrangement of the surfactant molecules in a micelle, the statement is indeed true. The polar parts are at the outer surface, and the non-polar parts are at the inner surface.

### Final Answer:
**True**: The position of non-polar and polar parts in a micelle is polar at the outer surface and non-polar at the inner surface.