Which of the following pairs show diagonal relationship?

Options

A. N,P
B. N,O
C. N,S
D. None of these

Answer

To determine which pairs of elements show a diagonal relationship, we need to understand what a diagonal relationship is in the periodic table. A diagonal relationship occurs between certain pairs of elements in different groups but in the same period, where they exhibit similar properties due to their positions in the periodic table.

### Step-by-Step Solution:

1. **Identify the Elements**: The elements given are nitrogen (N), phosphorus (P), oxygen (O), and sulfur (S).

2. **Understand Diagonal Relationships**: Diagonal relationships typically occur between elements that are one group apart and one period apart. For example, the element in group 15 (like nitrogen) can show similarities with the element in group 16 (like sulfur) that is diagonally positioned.

3. **Analyze the Given Elements**:
- **Nitrogen (N)** is in Group 15.
- **Phosphorus (P)** is in Group 15 (same group as nitrogen).
- **Oxygen (O)** is in Group 16.
- **Sulfur (S)** is in Group 16 (same group as oxygen).

4. **Check for Diagonal Relationships**:
- **Nitrogen (N)** and **Sulfur (S)**: Nitrogen is in Group 15 and Period 2, while Sulfur is in Group 16 and Period 3. They are diagonally positioned and show similarities in some properties.
- **Phosphorus (P)** and **Oxygen (O)**: These elements are in the same groups and do not show a diagonal relationship.
- **Oxygen (O)** and **Nitrogen (N)**: They are in adjacent groups but not diagonally related.
- **Phosphorus (P)** and **Sulfur (S)**: They are in the same groups and do not show a diagonal relationship.

5. **Conclusion**: The pair that shows a diagonal relationship is **Nitrogen (N)** and **Sulfur (S)**.

### Final Answer:
The pair that shows a diagonal relationship is **Nitrogen (N) and Sulfur (S)**.

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