Which ion has the highest ionisation enthalpy | vedclass

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(C) The electronic configurations of the given ions are:$Ti^{+} (Z=22): [Ar] 3d^2 4s^1$$V^{+} (Z=23): [Ar] 3d^3 4s^1$$Cr^{+} (Z=24): [Ar] 3d^5 4s^0$$M

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$Cr^{+}$

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(C) The electronic configurations of the given ions are:$Ti^{+} (Z=22): [Ar] 3d^2 4s^1$$V^{+} (Z=23): [Ar] 3d^3 4s^1$$Cr^{+} (Z=24): [Ar] 3d^5 4s^0$$Mn^{+} (Z=25): [Ar] 3d^5 4s^1$Ionisation enthalpy is the energy required to remove an electron from the outermost shell.$Cr^{+}$ has a stable half-filled $3d^5$ configuration with no electrons in the $4s$ orbital.Removing an electron from a stable,half-filled $d$-subshell requires significantly more energy compared to removing an electron from the $4s$ orbital of the other ions.Therefore,$Cr^{+}$ has the highest ionisation enthalpy.

Which ion has the highest ionisation enthalpy?

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