Assertion:The chemistry of the early actinoids is more comlicated than the corresponding lanthanoids.
Reason:Outer electronic configuration of actinoids is `(n-2)f^(1-14)(n-1)d^(0-1)ns^(2)`.

Options

A. If both assertion and reason is the correct explanation of assertion.
B. If both assertion and reason is the correct explanation of assertion.
C. If both assertion and reason is the correct explanation of assertion.
D. If both assertion and reason is the correct explanation of assertion.

Explanation

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

### Step 1: Understand the Assertion
The assertion states that "the chemistry of the early actinoids is more complicated than the corresponding lanthanoids."

- **Explanation**: This is true because the actinoids exhibit a greater variety of oxidation states compared to the lanthanoids. For instance, while lanthanoids typically exhibit +3 oxidation states, actinoids can show multiple oxidation states ranging from +3 to +6 and beyond, which adds complexity to their chemistry.

### Step 2: Understand the Reason
The reason states that "the outer electronic configuration of actinoids is (n-2)f^(1-14)(n-1)d^(0-1)ns^(2)."

- **Explanation**: This statement is also true. The electronic configuration of actinoids indeed reflects that they have electrons in the f-orbitals, d-orbitals, and s-orbitals. However, while this configuration is accurate, it does not fully explain why their chemistry is more complicated than that of lanthanoids.

### Step 3: Analyze the Relationship Between Assertion and Reason
- Both the assertion and the reason are true statements.
- However, the reason provided does not correctly explain why the assertion is true. The complexity of actinoid chemistry is primarily due to their multiple oxidation states and radioactive nature, not merely their electronic configuration.

### Conclusion
Thus, the final answer is:
- **Assertion**: True
- **Reason**: True
- **Explanation**: The reason is not the correct explanation for the assertion.

### Final Answer
Assertion and reason are both true, but the reason is not the correct explanation of the assertion.

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