Electronic configuration of Cu (Z = 29) is | vedclass

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(B) . The expected electronic configuration of $Cu$ $(Z = 29)$ is $[Ar] 3d^{9} 4s^{2}$,but the actual configuration is $[Ar] 3d^{10} 4s^{1}$.This occu

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$[Ar] 3d^{10} 4s^{1}$

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(B) . The expected electronic configuration of $Cu$ $(Z = 29)$ is $[Ar] 3d^{9} 4s^{2}$,but the actual configuration is $[Ar] 3d^{10} 4s^{1}$.This occurs because fully filled $d$-orbitals are more stable than partially filled $d$-orbitals.Therefore,one electron from the $4s$ orbital migrates to the $3d$ orbital to achieve a more stable,fully filled $d^{10}$ configuration.

Electronic configuration of $Cu$ $(Z = 29)$ is

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