Which of the following theory is not related to the chemical kinetics?

Options

A. Colliisons theory
B. Absolutely theory
C. Absolute reaction rate
D. VSEPR theory

Answer

To solve the question, "Which of the following theory is not related to the chemical kinetics?", we need to analyze the options provided and identify which one does not pertain to the study of reaction rates and mechanisms.

### Step-by-Step Solution:

1. **Understanding Chemical Kinetics**:
- Chemical kinetics is the branch of chemistry that deals with the rates of chemical reactions and the factors affecting these rates. It involves theories that explain how and why reactions occur at certain speeds.

2. **Identifying Relevant Theories**:
- **Collision Theory**: This theory states that for a reaction to occur, reactant molecules must collide with sufficient energy and proper orientation. This is directly related to chemical kinetics.
- **Absolute Reaction Rate Theory**: This theory provides a way to calculate the rate of a reaction based on the energy of the reactants and the transition state. It is also a key concept in chemical kinetics.
- **Absolute Theory**: This term is somewhat ambiguous as it does not refer to a recognized theory in chemical kinetics. However, it is often confused with the absolute reaction rate theory.

3. **Identifying the Non-Related Theory**:
- **VSEPR Theory (Valence Shell Electron Pair Repulsion Theory)**: This theory is used to predict the geometry of molecules based on the repulsion between electron pairs around a central atom. It is a concept from chemical bonding, not kinetics.

4. **Conclusion**:
- Among the options, VSEPR theory does not relate to chemical kinetics. Therefore, the correct answer is option D, VSEPR theory.

### Final Answer:
The theory that is not related to chemical kinetics is **VSEPR theory (Option D)**.

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