Chemistry · d- and f-Block Elements
Consider the following Assertion (A) and Reason (R) and choose the correct option. Assertion (A): In the actinoid series, the actinoid contraction continuously increases from element to element. Reason (R): It is due to poor shielding by 5f electrons.
- 1Both (A) and (R) are true and (R) is not the correct explanation of (A)
- 2(A) is false and (R) is true
- 3Both (A) and (R) are false
- 4Both (A) and (R) are true and (R) is the correct explanation of (A)✓
Correct answer
Both (A) and (R) are true and (R) is the correct explanation of (A)
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