Given below are two statements: one is labelled as Assertion (A) and the other is…
Chemistry · NEET · NTA Exams — d- and f- Block Elements
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Ionisation enthalpies of early actinoids are lower than for early lanthanoids.
Reason (R): Electrons are entering 5f orbitals in actinoids which experience greater shielding from nuclear charge.
In the light of the above statements, choose the most appropriate answer from the options given below:
- (A) is correct but (R) is not correct
- (R) is not correct but (R) is correct
- Both (A) and (R) are correct and (R) is the correct explanation of (A)
- Both (A) and (R) are correct but (R) is not the correct explanation of (A)
Answer
(A) (A) is correct but (R) is not correct
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