c
(i) Electron affinity of second period \(p-\)block element is less than third period \(p-\)block element due to small size of second period \(p-\)block element.
\(E.A.\) order : \(F < Cl\)
(ii) Down the group electron affinity decreases due to size increases.
\(EA.\) order : \(S > Se\) \(Li > Na\)