The second period element 'F' has electrons gain enthaly than the third period elements of same group 'Cl ' .Why ?

The second period element , for example , for example 'F' has less electron gain enthyalpy than the third period element of the same group of example'Cl' . Why ?

The order of electron gain enthalpy of VI A group elements is

Which in each pair of elements has a more negative electron gain enthalpy? (b) F or Cl

How does the electron gain enthalpy values vary in a group and a period ?

Halogens have maximum negative electron gain enthalpy in the respective periods of the periodic table. Why ?

The elements with higheset and lowest electron gain enthaly in group 16 resiectively are

Which elements are in same period and same group ?

To which group and period does the element 'D' belong ?