d and f Block Elements Part 1

Section: Chemistry

Question : 21 of 100

Marks: +1, -0

Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) Size of Bk3+ ion is less than Np3+ ion.
Reason (R) The above is a consequence of the lanthanoid contraction.
In the light of the above statements, choose the correct answer from the options given below

[16 Mar 2021 Shift 1]

A is false but R is true
Both A and R are true but R is not the correct explanation of A.
Both A and R are true and R is the correct explanation of A.
A is true but R is false.

Validate

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