Select the incorrect pair

Explanation

To solve the question of selecting the incorrect pair between electrophiles and nucleophiles, let's break down the definitions and characteristics of both terms step by step.

### Step 1: Define Electrophiles
- **Electrophiles** are defined as species that are electron-deficient. This means they have a tendency to accept electrons.
- They can accept an electron pair from electron-rich species (nucleophiles).

**Hint:** Remember that electrophiles are attracted to areas of high electron density.

### Step 2: Define Nucleophiles
- **Nucleophiles** are defined as electron-rich species. This means they have a surplus of electrons and can donate an electron pair.
- They are attracted to electron-deficient species (electrophiles).

**Hint:** Think of nucleophiles as "nucleus-loving" species that seek out positively charged or electron-poor areas.

### Step 3: Analyze the Given Pair
- The question provides a pair: electrophile and nucleophile.
- Based on the definitions:
- Electrophiles are electron-deficient (correct).
- Nucleophiles are electron-rich (correct).

### Step 4: Identify the Incorrect Pair
- The question asks for an incorrect pair. Since both definitions are correct, we need to check if the pairing itself is incorrectly stated in the question.
- If the question implies that an electrophile is a nucleophile or vice versa, that would be incorrect.

### Conclusion
- The incorrect pairing would be if it states that an electrophile is a nucleophile, as they have opposite characteristics.
- Therefore, the correct answer to the question is option A, which states that the pair is incorrectly matched.

**Final Answer:** Option A is the incorrect pair.

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