Which element of the following pairs have smaller ionization enthalpy? (a) Ca or Be , (b) Ca or K , (c) Cl or I. Justify your answer.

Which of the following will have lowest first ionization enthalpy ?

Which of the following pairs of elements would you expect to have lower first ionization enthalpy ? (a) Cl or F , (b) Cl or S , (c) K or Ar , (d)Kr or Xe.

Which of the following pairs of elements would have higher electron gain enthalpy? (a) N or O , (b) F or Cl . Explain.

Which of the following will have most negative electron gain enthalpy? P,S,Cl,F

Which element of the following pairs of elements has higher ionisation energy? Justify your answer a) K or Ca b) Be or B c) I or Ba d) F or Cl e) N or O

Which out of LI, Na, K, Be, Mg, Ca has lowest ionization enthalpy and why?

Which of the following pairs of elements would you expect to have lower first ionization energy ? (i) Cl or F

Which of the following pairs of elements would you expect to have lower first ionization energy ? Cl or S

Which of the following pairs of elements would you expect to have lower first ionization energy ? k or Ar