JEE Main Chemistry question
The electronic configurations of four elements are given below. Arrange these elements in the correct order of the magnitude (without sign) of their electron affinity. I. II. III. IV.
Select the correct answer using the codes given below [Guj CET 2008]
Answer: (D)
Solution
Configuration I () is fluorine, II () is chlorine, III () is oxygen, and IV () is sulfur. Because the very small period-2 atoms O and F have high electron density that repels an incoming electron, their electron affinity magnitudes are
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