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Which is nucleophile...

Which is nucleophile

A

`BF_(3)`

B

`NH_(3)`

C

`BeCl_(2)`

D

`H_(2)O`

Text Solution

AI Generated Solution

The correct Answer is:
To determine which species is a nucleophile, we can follow these steps: ### Step 1: Define Nucleophile A nucleophile is a species that has a tendency to donate an electron pair to an electrophile. Nucleophiles are typically electron-rich and can be negatively charged or neutral species with lone pairs of electrons. ### Step 2: Identify Characteristics of Nucleophiles Nucleophiles usually have: - A negative charge (anions) or - Lone pairs of electrons that can be donated to form a bond with an electrophile. ### Step 3: Analyze Given Options Let’s consider the examples mentioned in the video: 1. **BF3**: Boron trifluoride has a vacant p-orbital and acts as an electrophile because it can accept electrons. 2. **NH3 (Ammonia)**: Ammonia has a lone pair of electrons on the nitrogen atom, which can be donated to an electrophile, making it a nucleophile. 3. **H2**: Hydrogen gas does not have lone pairs or a negative charge, so it is not a nucleophile. ### Step 4: Conclusion Among the options, **NH3** is the nucleophile because it can donate its lone pair of electrons to an electrophile. ### Final Answer The nucleophile is **NH3 (Ammonia)**. ---

To determine which species is a nucleophile, we can follow these steps: ### Step 1: Define Nucleophile A nucleophile is a species that has a tendency to donate an electron pair to an electrophile. Nucleophiles are typically electron-rich and can be negatively charged or neutral species with lone pairs of electrons. ### Step 2: Identify Characteristics of Nucleophiles Nucleophiles usually have: - A negative charge (anions) or ...
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