Assertion : I.E. of `""_7N` is more than that of `""_8O` as well as `""_6C`.
Reason : The reactivity of `""_7N and ""_6C` towards oxygen is different.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false.

Explanation

To solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Analyze the Assertion
The assertion states that the ionization energy (I.E.) of nitrogen (N) is greater than that of oxygen (O) and carbon (C).

- **Ionization Energy** refers to the energy required to remove an electron from an atom in the gaseous state.
- The electronic configuration of nitrogen (N) is \(1s^2 2s^2 2p^3\), oxygen (O) is \(1s^2 2s^2 2p^4\), and carbon (C) is \(1s^2 2s^2 2p^2\).
- Nitrogen has a half-filled p subshell (2p^3), which is particularly stable. This stability makes it harder to remove an electron from nitrogen compared to oxygen and carbon.

**Conclusion for Step 1**: The assertion is correct because nitrogen's half-filled configuration results in a higher ionization energy compared to oxygen and carbon.

### Step 2: Analyze the Reason
The reason states that the reactivity of nitrogen and carbon towards oxygen is different.

- Reactivity refers to how readily an element will combine with other substances.
- Nitrogen has 5 valence electrons and carbon has 4 valence electrons. Their different valence electron counts lead to different bonding behaviors with oxygen.
- Nitrogen tends to form multiple bonds (like in N2) and can react in various ways, while carbon typically forms covalent bonds with oxygen.

**Conclusion for Step 2**: The reason is also correct because the differing number of valence electrons leads to different reactivities of nitrogen and carbon towards oxygen.

### Step 3: Determine the Relationship
Now we need to determine if the reason correctly explains the assertion.

- The assertion's explanation is based on the stability of nitrogen's half-filled electronic configuration, while the reason discusses the reactivity differences between nitrogen and carbon.
- The reason does not directly explain why nitrogen has a higher ionization energy than oxygen and carbon.

**Final Conclusion**: Both the assertion and reason are true, but the reason does not correctly explain the assertion. Therefore, the correct option is that both are true, but the reason is not the correct explanation of the assertion.

### Final Answer
Assertion is true, Reason is true, but Reason is not the correct explanation of Assertion.

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