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Question
Similar sizes of second and third transition elements can be explained on the basis of −
Similar sizes of second and third transition elements can be explained on the basis of −
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Solution
The correct option is C Lanthanide contraction
In the third transition series after lanthanum, there is lanthanoid contraction. Due to this contraction, the size of any atom of the third transition series is almost the same as that of the element lying just above in the second transition series. This leads to the similarity in their radii.
Therefore, the correct answer is (C)
In the third transition series after lanthanum, there is lanthanoid contraction. Due to this contraction, the size of any atom of the third transition series is almost the same as that of the element lying just above in the second transition series. This leads to the similarity in their radii.
Therefore, the correct answer is (C)
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