Which pair of elements cann from multiple bond with itselff and oxygen?

Options

A. F,N
B. N,Cl
C. N,Br
D. N,C

Answer

To determine which pair of elements can form multiple bonds with itself and oxygen, we will analyze each option given in the question.

### Step-by-Step Solution:

1. **Identify the Options**: The pairs given are:
- Option 1: Fluorine and Nitrogen
- Option 2: Nitrogen and Chlorine
- Option 3: Nitrogen and Bromine
- Option 4: Nitrogen and Carbon

2. **Analyze Option 1: Fluorine and Nitrogen**:
- **Fluorine**: It has an outer electronic configuration of 2s² 2p⁵. Due to its small size and high electronegativity, fluorine does not form multiple bonds with itself or with oxygen. It can only form single bonds.
- **Nitrogen**: Nitrogen can form multiple bonds with itself (N≡N) and with oxygen (e.g., NO, NO₂).
- **Conclusion**: This pair is incorrect because fluorine cannot form multiple bonds.

3. **Analyze Option 2: Nitrogen and Chlorine**:
- **Chlorine**: Chlorine has a larger atomic size, which limits its ability to form multiple bonds with itself. It can form single bonds with itself and can form multiple bonds with oxygen (e.g., ClO₂).
- **Nitrogen**: As previously mentioned, nitrogen can form multiple bonds.
- **Conclusion**: This pair is incorrect because chlorine cannot form multiple bonds with itself.

4. **Analyze Option 3: Nitrogen and Bromine**:
- **Bromine**: Similar to chlorine, bromine is a larger halogen and cannot form multiple bonds with itself. It can form multiple bonds with oxygen (e.g., BrO₃).
- **Nitrogen**: Nitrogen can form multiple bonds.
- **Conclusion**: This pair is incorrect because bromine cannot form multiple bonds with itself.

5. **Analyze Option 4: Nitrogen and Carbon**:
- **Carbon**: Carbon has the ability to form multiple bonds with itself (e.g., C=C, C≡C) and can also form multiple bonds with oxygen (e.g., CO₂).
- **Nitrogen**: As discussed, nitrogen can form multiple bonds with itself and with oxygen.
- **Conclusion**: This pair is correct because both nitrogen and carbon can form multiple bonds with each other and with oxygen.

### Final Answer:
The correct pair of elements that can form multiple bonds with itself and oxygen is **Nitrogen and Carbon**.

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