Question

The correct order of electron gain enthalpies of $Cl,F,Te$ and $Po$ is

• A. F < Cl < Te < Po
• B. Po < Te < F < Cl
• C. Te < Po < Cl < F
• D. Cl < F < Te < Po

Answer 1

Answer: (D)

As $Cl$ has maximum electron affinity among all elements.

Element	${\Delta }_{\text{eg }}H(kJ/mol)$
F	-328
Cl	-349
Te	-190
Po	-174