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

Which of the following pairs of elements would have a more negative electron gain enthalpy? i) O or N ii) F or Cl

Which of the following will have the most negative electron gain enthalpy and which the east negative? (P, S, CI, F). Explain your answer.

Which of the following element has maximum electron gain enthapy(negative)? F , Cl , Br , I .

The negative electron gain enthalpy of F is less/more than Cl.

Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii? (Numbers in the parenthesis are atomic numbers)

Which of the following elements is represents by the electronic configration ?

Which of the following elements has the maximum electron affinity ?