Which one of the following statements is incorrect in relation to ionisation enthalpy?

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Ionisation enthalpy increases for each successive electron.

The greatest increase in ionisation enthalpy is experienced on removal of electron from core noble gas configuration.

End of valence electrons is marked by a big jump in ionisation enthalpy.

Removal of electron from orbitals bearing lower n value is easier than from orbital having higher n value.

answer is D.

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Detailed Solution

As the value of n increases, the nuclear attraction over the outermost shell decreases, therefore removal of an electron will be easier.

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