What is the basic difference between the terms electron gain enthalpy and electronegativity?

Which of the following pairs of elements would have a more negative electron gain enthalpy?

(i) O or F (ii) F or Cl

Would you expect the second electron gain enthalpy of O as positive, more negative or less negative than the first? Justify your answer.

How would you react to the statement that the electronegativity of N on Pauling scale is 3.0 in all the nitrogen compounds?

Describe the theory associated with the radius of an atom as it

A. gains an electron

B. loses an electron