NEETChemistryD and F Block ElementsMCQ+4 / −1
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 correct answer from the options given below :
- A(A) is true but (R) is false.
- B(A) is false but (R) is true.
- CBoth (A) and (R) are true and (R) is the correct explanation of (A).
- DBoth (A) and (R) are true but (R) is not the correct explanation of (A).
View written solutionFree
Correct answer: C
Reason in correct explanation the above Assertion.
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