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NEET2006ChemistryClassification of Elements and Periodicity in PropertiesActual

Which of the following have highest electron affinity ?

Options

  1. AF
  2. BCl
  3. CN
  4. DO

Correct answer

B. Cl

Step-by-step solution

Electron affinity of halogens is maximum in a period and it decreases in a group from top to bottom but the EA of chlorine is greater than fluorine due to smaller atomic size of fluorine.

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