Which of the following in nucleophile?

Options

A. `OH^(-)`
B. `ROR`
C. `R-OH`
D. All of these

Answer

To determine which of the given options is a nucleophile, we need to understand the characteristics of nucleophiles. Nucleophiles are species that are rich in electrons, meaning they have a high electron density. This can be due to the presence of a negative charge or lone pairs of electrons. Nucleophiles attack electrophiles, which are electron-deficient species.

### Step-by-Step Solution:

1. **Identify the Characteristics of Nucleophiles**:
- Nucleophiles are electron-rich species.
- They can have a negative charge or possess lone pairs of electrons.

2. **Analyze the Given Options**:
- **Option 1: OH⁻ (Hydroxide Ion)**:
- This species has a negative charge, which indicates it has high electron density. Therefore, OH⁻ is a nucleophile.

- **Option 2: ROR (Dialkyl Ether)**:
- This species contains oxygen, which has lone pairs of electrons. The lone pairs can be used to attack electrophiles, making ROR a nucleophile.

- **Option 3: ROH (Alcohol)**:
- Similar to ROR, ROH also has an oxygen atom with lone pairs. These lone pairs can participate in nucleophilic attacks, so ROH is also a nucleophile.

3. **Conclusion**:
- All three species (OH⁻, ROR, and ROH) exhibit nucleophilic behavior due to the presence of negative charge or lone pairs of electrons.
- Therefore, the correct answer is that all of these are nucleophiles.

### Final Answer:
**All of the above (OH⁻, ROR, ROH) are nucleophiles.**

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