Statement-1 : `IE_(1)` ofN is greater than 0 .
Statement-2: N-atom is bigger than O in size.

Options

A. Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.
B. Staterment-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.
C. Statement-1 is true, statement-2 is false.
D. Statement-1 is false, statement-2 is true.

Answer

To analyze the statements provided in the question, we will evaluate each statement individually and then determine their relationship.

### Step 1: Evaluate Statement-1
**Statement-1**: The first ionization energy (IE₁) of nitrogen (N) is greater than that of oxygen (O).

- **Explanation**: Ionization energy is the energy required to remove an electron from an atom in its gaseous state. The electronic configuration of nitrogen is \(1s^2 2s^2 2p^3\) and for oxygen, it is \(1s^2 2s^2 2p^4\).
- Nitrogen has a half-filled p subshell (2p³), which is more stable than the partially filled p subshell of oxygen (2p⁴). This stability means that removing an electron from nitrogen requires more energy compared to oxygen.
- Therefore, **Statement-1 is true**.

### Step 2: Evaluate Statement-2
**Statement-2**: The nitrogen atom is bigger than the oxygen atom in size.

- **Explanation**: Atomic size generally decreases across a period from left to right due to increasing nuclear charge, which pulls the electrons closer to the nucleus.
- Since nitrogen (N) is to the left of oxygen (O) in the periodic table, nitrogen has a larger atomic radius than oxygen.
- Therefore, **Statement-2 is also true**.

### Step 3: Analyze the Relationship Between the Statements
- Both statements are true; however, they do not explain each other. The fact that nitrogen has a higher ionization energy does not directly relate to its atomic size being larger than that of oxygen.
- Thus, while both statements are correct, they are not correct explanations for each other.

### Conclusion
Both statements are true, but they do not provide explanations for each other.

### Final Answer
- **Statement-1 is true.**
- **Statement-2 is true.**
- They are not correct explanations for each other.

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