The atomic radii from Cr to Cu are almost ide | vedclass

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Question

(D) The atomic radii of transition elements in a series remain almost constant because the increase in nuclear charge is balanced by the increase in t

Vedclass · Accepted Answer

All the above

Vedclass · Answer

(D) The atomic radii of transition elements in a series remain almost constant because the increase in nuclear charge is balanced by the increase in the screening effect provided by the $d$-electrons. As we move from $Cr$ to $Cu$,the nuclear charge increases,but the added electrons enter the inner $(n-1)d$ orbitals,which provide effective shielding. This shielding effect counteracts the increase in nuclear charge,resulting in nearly constant atomic radii. Therefore,the correct answer is $(D)$.

The atomic radii from $Cr$ to $Cu$ are almost identical because of:

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