Periodic TableHard
Question
Which of the following represents the correct order of increasing electron gain enthalpy with negative sign of the elements O, S, F and Cl ?
Options
A.Cl < F < O < S
B.O < S < F < Cl
C.F < S < O < Cl
D.S < O < Cl < F
Solution
Electron gain enthalpy, generally, increases in a period from left to right and decreases in a group on moving downwards. However, members of III period have somewhat higher electron gain enthalpy as compared to the corresponding members of second period, because of their small size.
O and S belong to VI A (16) group and Cl and F belong to VII A (17) group. Thus, the electron gain enthalpy of Cl and F is higher as compared to O and S.
Cl and F > O and S
Between Cl and F, Cl has higher electron gain enthalpy as in F, the incoming electron experiences a greater force of repulsion because of small size of F atom. similar is true in case of O and S ie, The electron gain enthalpy of S is higher as compared to O due to its small size. Thus, the correct order of electron gain enthalpy of given elements is
O < S < F < Cl
O and S belong to VI A (16) group and Cl and F belong to VII A (17) group. Thus, the electron gain enthalpy of Cl and F is higher as compared to O and S.
Cl and F > O and S
Between Cl and F, Cl has higher electron gain enthalpy as in F, the incoming electron experiences a greater force of repulsion because of small size of F atom. similar is true in case of O and S ie, The electron gain enthalpy of S is higher as compared to O due to its small size. Thus, the correct order of electron gain enthalpy of given elements is
O < S < F < Cl
Create a free account to view solution
View Solution FreeMore Periodic Table Questions
Identify the correct order of solubility in aqueous medium :...The increasing order of the first ionization enthalpies of the elements B, P, S and F (lowest first) is...Beryllium and aluminium exhibit many properties which are similar. But the two elements differ in...Which one of the following does not correctly represent the correct order of the property indicated against it?...Which of the order for ionization energy is correct ?...