Which one of the following arrangements represents the correct order of electron gain enthalpy of the given atomic species?

Options

A. `F lt Cl lt O lt S`
B. `S lt O lt Cl lt F`
C. `O lt S lt F lt Cl`
D. `Cl lt F lt S lt O`

Answer

C

Explanation

The electron gain enthalpy of Cl is more negative than that of F and that of S is more negative than O. Therefore, the overall correct gain enthalpy (with negative sign) is :
`O(-141 kJ mol^(-1))lt S(-200 kJ mol^(-1))lt F(-328kJ mol^(-1))lt Cl(-349 kJ mol^(-1))`