AP EAMCET · Chemistry · d and f Block Elements
Choose the correct option regarding the following.
Assertion Actinides exhibit a larger number of oxidation states than lanthanides.
Reason There is a large energy gap between \(5 f, 6 d\) and \(7 s\) sub-shells.
- A Assertion and Reason are correct, and Reason is the correct explanation for the Assertion.
- B Assertion and Reason are correct, and Reason is not the correct explanation for the Assertion.
- C Assertion is correct, Reason is wrong.
- D Assertion is incorrect, Reason is correct.
Answer & Solution
Correct Answer
(C) Assertion is correct, Reason is wrong.
Step-by-step Solution
Detailed explanation
Actinides exhibit larger oxidation states than lanthanides because of the very small energy gap between \(5 f, 6 d\) and \(7 s\) subshells. Thus, the outermost electrons get easily excited to the higher energy levels, giving variable oxidation states. Hence, Assertion is…
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