Why do halogens have maximum negative electron gain enthalpy in the respective periods of the periodic table?

(a) Halogens have maximum negative gain enthalpy in the respective periods of the periodic table. Why? (b) Although electron gain enthalpy of fluorine is less negative as compared to chlorine, fluorine is a stronger oxidising agent than chlorine . Why? Fluorine exhibits only-1 oxidation state, wherease other hlaogens exhibit +1,+3,+5, and +7 oxidation states also. explain.

S has more negative electron gain enthalpy than O why ?

Name a halogen which has more negative electron gain enthalpy value?

Which halogen has the highest value of negative electron gain enthalpy ?

The correct order of negative electron gain enthalpy of halogens is

Why do halogens have high electron gain enthalpies (i.e. -Delta_(eg)H^(o.)) ?

The maximum number of valency electrons possible for atom in the second period of the periodic table is :

If each orbital can take maximum of three electrons, the number of elements in the third period of the periodic table will be: