The Electron Affinity Values (in Kg Mol–1) Of Three Halogens X, Y and Z are Respectively –349, –333 And –325. Then X, Y and Z respectively, Are

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Question

The electron affinity values (in kg mol–1) of three halogens XY and Z are respectively –349, –333 and –325. Then XY and Z respectively, are

Solution

Correct option is

Cl2, F2 and Br2

 

The electron affinity (in kJ/mol),

               Fluorine = 332.6

               Chlorine = 348.5

               Bromine = 324.7

                   Iodine = 295.5  

Chlorine has the highest electron affinity value.  

So, the correct order of electron affinity will be  

                 Cl2 > F2 > Br2

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