Question

How does electron gain enthalpy vary across period in periodic table? Out of oxygen and sulphur which has more negative electron gain enthalpy and why?

Answer 1

Answer:

down the group increase. oxygen has more negative gain enthalpy because down the group electron gain enthalpy increase

Answer 2

Answer:

S has high electron gain enthalpy because in sulphur there is more inter-electronic repulsion than oxygen, therefore, more energy is released in case of sulphur on gaining electrons.