Q47 of 70 Page 111

The second and third rows of transition elements resemble each other much more than they resemble the first row. Explain why?

Due to poor f orbital shielding, effective nuclear charge increases and there is a contraction in size of the third row elements.This contraction in size is called Lanthanide contraction. The atomic radii of second and third rows are almost similar and therefore they resemble each other more.


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