Given below are two statements. One is labelled as Assertion and the other is labelled as…
Chemistry · JEE Main · NTA Exams — d- and f-Block Elements
Given below are two statements. One is labelled as Assertion and the other is labelled as Reason.
STATEMENT-1: (Assertion); The pairs of elements such as Zr-Hf, Nb-Ta and Mo-W have nearly identical sizes.
STATEMENT-2: (Reason): The smaller size is due to lanthanide contraction.
In the light of the above statements, choose the correct answer from the options given below:
- Both Statement-1 and Statement-2 are correct and Statement-2 is a correct explanation for the Statement-1.
- Both Statement-1 and Statement-2 are correct but Statement-2 is not a correct explanation for the Statement-1.
- Statement-1 is correct but Statement-2 is incorrect.
- Statement-1 is incorrect but Statement-2 is correct.
Answer
(A) Both Statement-1 and Statement-2 are correct and Statement-2 is a correct explanation for the Statement-1.
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