Question

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

• A. Only electronegativity
• B. Only ionisation enthalpy
• C. Only electron gain enthalpy and ionisation enthalpy
• D. All of the above

Answer 1

Answer: (C)

Only electron gain enthalpy and ionisation enthalpy

Answer 2

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.