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  4. The atomic radii of transition elements from Cr to Cu are almost equal because

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Q. The atomic radii of transition elements from Cr to Cu are almost equal because

NTA AbhyasNTA Abhyas 2020The d-and f-Block Elements

Solution:

From $\text{Cr}$ to $\text{Cu,}$ elements have half or more than half filled (n-1)d-orbitals. Here, an increase in effective nuclear charge is balanced by increased screening effect of electrons in (n - 1)d-orbitals.