Arrange S,O and Se in ascending order of electron affinity

Se < S < O

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Se < O < S

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S < O < Se

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S < Se < O

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Solution

The correct option is A
Se < S < O

Correct order of electron affinity is Se < S < O. In a group electron affinity decreases with increase in atomic number.

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Arrange S,O and Se in ascending order of electron affinity

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