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Question

Chemistry Question on Classification of elements & periodicity in properties

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

A

Cl < F < S < O

B

O < S < F < CI

C

S < O < Cl < F

D

F < CI < O < S

Answer

O < S < F < CI

Explanation

Solution

The correct order of electron gain enthalpy
(electron affinity) is
O<S<F<ClO < S < F < Cl
(electron affinity in eV ) 1.482.073.453.611.48 2.07 3.45 3.61