Home Chemistry Classification of Elements and Periodicity Ionisation Energy Which one of the following statements is inc…
Chemistry Classification of Elements and Periodicity Ionisation Energy Single Correct MCQ
Published on: August 12, 2026

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

A
Ionization enthalpy increases for each successive electron.
B
The greatest increase in ionization enthalpy is experienced on removal of electron from core of noble gas configuration.
C
End of valence electrons is marked by a big jump in ionization enthalpy.
D
Removal of electron from orbitals bearing lower n value is easier than from orbitals having higher n value.

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Verified by Experts
The correct answer is:
D

Orbitals bearing lower value of n will be more closer to the nucleus and thus electrons will experience greater attraction from nucleus and so its removal will be difficult, not easier.

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