Electron gain enthalpy with negative sign of fluorine is less than that of chlorine due to :

Question

Electron gain enthalpy with negative sign of fluorine is less than that of chlorine due to : (A) High ionization enthalpy of fluorine (B) Smaller size of chlorine atom (C) Smaller size of fluorine atom (D) Bigger size of 2p orbital of fluorine

Tardigrade Admin · Accepted Answer

The electron gain enthalpy order for halogens is

C I > F > B r > I

Due to small size of fluorine the extra electron to be added feels more electron- electron repulsion. Therefore fluorine has less value for electron affinity than chlorine.

Q. Electron gain enthalpy with negative sign of fluorine is less than that of chlorine due to :

High ionization enthalpy of fluorine

Smaller size of chlorine atom

Smaller size of fluorine atom

Bigger size of $2 p$ orbital of fluorine

The electron gain enthalpy order for halogens is
$C I > F > B r > I$
Due to small size of fluorine the extra electron to be added feels more electron- electron repulsion. Therefore fluorine has less value for electron affinity than chlorine.