Which element of the 3d-series has the highes | vedclass

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(B) The electronic configuration of $Zn$ is $[Ar] 3d^{10} 4s^2$.After the removal of two electrons,the configuration becomes $[Ar] 3d^{10}$.Since $3d^

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$Zn$

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(B) The electronic configuration of $Zn$ is $[Ar] 3d^{10} 4s^2$.After the removal of two electrons,the configuration becomes $[Ar] 3d^{10}$.Since $3d^{10}$ is a completely filled stable configuration,removing the third electron requires a very high amount of energy.Therefore,$Zn$ has the highest third ionisation enthalpy among the $3d$-series elements.Thus,the correct option is $B$.

Which element of the $3d$-series has the highest third ionisation enthalpy?

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