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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
1
Medium
1 of 1
Analyzing
+4 | -1
Assertion :Atomic sizes of and are almost similar.
Reason : and belong to same group.
Reason : and belong to same group.
View answer and explanation
Correct option: B
If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion
The correct answer is B (If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion) because the lanthanoid contraction is the primary reason for the similar sizes, not just belonging to the same group.
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