Home Chemistry Classification of Elements and Periodicity Electronegativity Which of the following is affected by the st…
Chemistry Classification of Elements and Periodicity Electronegativity Single Correct MCQ
Published on: August 13, 2026

Which of the following is affected by the stable electronic configuration of an atom ?

A
Electronegativity only electronegativity
B
Ionisation enthalpy only ionisation enthalpy
C
Electron gain enthalpy Correct answer is : both electron gain enthalpy and ionisation enthalpy
D
all of the above

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The correct answer is:
C

The addition of extra electron is difficult to the atom having stable configuration and so electron gain enthalpy will be positive. Similarly the removal of electron is quite difficult from stable configuration and so ionisation enthalpy is higher. However EN remains unaffected because it neither involves gain nor loss of electron.

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