Given below are two statement: 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:
Given below are two statement: 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:
Option 1 -
Both A and R are true but R is not the correct explanation of A
Option 2 -
A is true but R is false
Option 3 -
Both A and R are true and R is the correct explanation of A
Option 4 -
A is false but R is true
-
1 Answer
-
Correct Option - 4
Detailed Solution:The size of the Bk³? ion is less than the Np³? ion because Berkelium (Bk) lies beyond Neptunium (Np) in the actinoid series, and the size variation here is because of the actinoid contraction.
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