Which of the following orders of atomic radiu | vedclass

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(D) The atomic radius increases down a group. However,due to the lanthanoid contraction,the elements of the $4d$ and $5d$ series have nearly identical

Vedclass · Accepted Answer

$Ni < Pd \approx Pt$

Vedclass · Answer

(D) The atomic radius increases down a group. However,due to the lanthanoid contraction,the elements of the $4d$ and $5d$ series have nearly identical atomic radii. In the case of the $Ni$ group $(Ni, Pd, Pt)$,the atomic radius of $Ni$ is smaller than that of $Pd$,while $Pd$ and $Pt$ have approximately the same atomic radius due to the lanthanoid contraction. Thus,the correct order is $Ni < Pd \approx Pt$.

Which of the following orders of atomic radius is correct $:-$

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