1.

Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species ?

Answer»

F lt CI lt O lt S
S lt O lt CI lt F
O lt S lt F lt CI
CI lt F lt S lt O

Solution :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))`


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