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JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

The correct order of increasing electron affinity of halogens is [MP PET 2008, J & K CET 2008]

Answer: (B)

Solution

Electron affinity generally decreases with increasing atomic size down a group, but fluorine's very small size causes extra electron-electron repulsion, making its electron affinity lower than chlorine's. This gives the

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Question ID VK-133125