Which element from the following has the lowe | vedclass

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(B) The first ionization enthalpy $(IE_1)$ of the $3d$ transition series elements generally increases from left to right across the period due to the

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$Sc$

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(B) The first ionization enthalpy $(IE_1)$ of the $3d$ transition series elements generally increases from left to right across the period due to the increase in effective nuclear charge.Among the given elements ($Sc$,$Mn$,$Cu$,$Zn$),$Sc$ $(Z=21)$ is the first element of the $3d$ series.Since $IE_1$ increases as we move from left to right,the element at the beginning of the series will have the lowest ionization enthalpy.Therefore,$Sc$ has the lowest $IE_1$ value.

Which element from the following has the lowest first ionization enthalpy $(IE_1)$?

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