The correct order of density for the 3d serie | vedclass

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Question

(D) The density of transition elements in the $3d$ series generally increases across the period from $Sc$ to $Cu$ due to the increase in atomic mass a

Vedclass · Accepted Answer

$Sc < Zn < Ni < Cu$

Vedclass · Answer

(D) The density of transition elements in the $3d$ series generally increases across the period from $Sc$ to $Cu$ due to the increase in atomic mass and decrease in atomic radius.$Sc$ $(Z=21)$ has the lowest density,while $Cu$ $(Z=29)$ has a higher density.$Zn$ $(Z=30)$ has a slightly lower density than $Cu$ due to the increase in metallic radius caused by the completion of the $3d^{10}$ subshell.Therefore,the correct order of increasing density is $Sc < Zn < Ni < Cu$.

The correct order of density for the $3d$ series elements is:

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