Question

Fluorine has lesser electron affinity value than chlorine. However, fluorine shows the greater ease of formation of $F^{-}$ ion. than chlorine for $C{l}^{-}$ ion. How do you justify this?

Answer 1

Due to high electron negativity of Florine atom the tendency to attract electron is high. So, Flourine can easily form $\stackrel{(-)}{F}$ compared to chlorine from $\stackrel{-}{Cl}$.