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JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

Maximum electron affinity is shown by the species at serial number: (1) O (2) F (3) (4) He (5) N

Answer: 2

Solution

Among neutral atoms O, F and N, fluorine has a considerably higher (more favourable/exothermic) electron affinity than oxygen, since F needs only one more electron to complete a stable octet, while nitrogen's extra-stable half-filled configuration makes its electron affinity

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Question ID VK-133340