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Question

Considering the elements F,Cl,O and S, the correct order of their electron affinity values is:
  1. F>Cl>O>S
  2. F>O>Cl>S
  3. Cl>F>S>O
  4. O>F>S>Cl


Solution

The correct option is C Cl>F>S>O
ΔH kJ mol1Cl=349;F=328;S=200;O=141
Due to small sizes of F and O, EA value is less than expected.
Option C is correct.
 

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