Assertion :The chemistry of the early actinoids is more complicated than the corresponding lanthanoids. Reason: Outer electronic configuration of actinoids is $(n - 2) f^{1 - 14} (n - 1) d^{0 - 1} n s^{2}$ .

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
The chemistry of the early actinoids is more complicated than the corresponding lanthanoids, due to a large number of oxidation states possible for these elements. The oxidation state varies from +3 to +6 due to the small energy gap between valence orbitals i.e. $7 s, 6 d, 5 f$ .
Actinoids have the outer electronic configuration of actinoids is $5 f^{1 - 14} 6 d^{0 - 1} 7 s^{2}$ .
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

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