Choose the coorect statement among the following:

Options

A. `NO` is more stable than `NO^+`.
B. `NO^(2+)` is diamagnetic but `NO^+` is paramagnetic
C. `NO^-` is more stable than NO
D. `NO^+` is diamagnetic , `NO^-` is paramagnetic but `NO^+` is more stable than `NO^-`.

Answer

To solve the question, we need to analyze the stability of the given species: NO, NO+, NO2+, and NO−. We will determine their magnetic properties and stability based on their electron configurations.

### Step-by-Step Solution:

1. **Determine the Total Electrons in Each Species:**
- For NO (Nitric Oxide):
- Nitrogen (N) has 7 electrons.
- Oxygen (O) has 8 electrons.
- Total = 7 + 8 = 15 electrons.
- For NO+ (Nitric Oxide Cation):
- Total = 15 - 1 = 14 electrons.
- For NO2+ (Nitrogen Dioxide Cation):
- Total = 7 + 8 + 8 - 2 = 21 - 2 = 19 electrons.
- For NO− (Nitric Oxide Anion):
- Total = 15 + 1 = 16 electrons.

2. **Determine the Magnetic Properties:**
- **NO (15 electrons)**:
- Configuration leads to 1 unpaired electron → Paramagnetic.
- **NO+ (14 electrons)**:
- Configuration leads to all electrons paired → Diamagnetic.
- **NO2+ (19 electrons)**:
- Configuration leads to 1 unpaired electron → Paramagnetic.
- **NO− (16 electrons)**:
- Configuration leads to all electrons paired → Diamagnetic.

3. **Stability Analysis:**
- Paramagnetic species (NO and NO2+) are generally less stable than diamagnetic species (NO+ and NO−).
- Therefore, NO+ is more stable than NO, and NO− is more stable than NO.

4. **Conclusion:**
- NO is less stable than NO+.
- NO2+ is paramagnetic, while NO+ is diamagnetic.
- NO− is more stable than NO because it is diamagnetic, while NO is paramagnetic.

### Correct Statement:
- The correct statement is: **NO− is more stable than NO.**