Total number of electrophiles present in the following are
`NO_(2)^(+), SO_(3), CN^(-), F^(-), C Cl_(4), NH_(3), , :C Cl_(2)`.

Answer

To determine the total number of electrophiles from the given species, we will analyze each one to see if it qualifies as an electrophile.

### Step-by-Step Solution:

1. **Identify the species**: The species given are:
- NO₂⁺
- SO₃
- CN⁻
- F⁻
- CCl₄
- NH₃
- CCl₂

2. **Define an electrophile**: An electrophile is a species that is electron-deficient and can accept electrons from a nucleophile. Electrophiles can be positively charged or neutral, but they cannot be negatively charged.

3. **Analyze each species**:
- **NO₂⁺**: This species has a positive charge and is electron-deficient. It can accept electrons, thus it is an electrophile.
- **SO₃**: This is a neutral molecule that is electron-deficient due to the presence of highly electronegative oxygen atoms. It can accept electrons, so it is an electrophile.
- **CN⁻**: This species carries a negative charge and is electron-rich, making it a nucleophile, not an electrophile.
- **F⁻**: This is also a negatively charged species, making it a nucleophile, not an electrophile.
- **CCl₄**: This molecule has a complete octet around carbon and is neutral. It does not have electron deficiency, so it is not an electrophile.
- **NH₃**: Ammonia has a lone pair of electrons on nitrogen, making it a nucleophile rather than an electrophile.
- **CCl₂**: This is a dichlorocarbene, which has a carbon atom with a lone pair of electrons and is electron-deficient due to the presence of electronegative chlorine atoms. Thus, it acts as an electrophile.

4. **Count the electrophiles**:
- From the analysis, the electrophiles are:
- NO₂⁺
- SO₃
- CCl₂
- Total number of electrophiles = 3.

### Final Answer:
The total number of electrophiles present in the given species is **3**.

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