Why less stable carbocations tend to rearrange to more stable carbocations but carbanions and free radicals do not ? Why so ? Explain.

Explanation

To understand why less stable carbocations tend to rearrange to more stable carbocations while carbanions and free radicals do not, we can break down the explanation into several steps:

### Step-by-Step Solution:

1. **Definition of Carbocations, Carbanions, and Free Radicals**:
- **Carbocations** are positively charged carbon species (e.g., CH3^+).
- **Carbanions** are negatively charged carbon species (e.g., CH2^-).
- **Free Radicals** are neutral species with an unpaired electron (e.g., CH2•).
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