Classification Of Elements And Periodicity In Properties Question 238
Question: Arrange $ S,O $ and $ Se $ in ascending order of electron affinity [Roorkee 1990]
Options:
A) Se < S < O
B) Se < O < S
C) S < O < Se
D) S < Se < O
Show Answer
Answer:
Correct Answer: A
Solution:
Correct order of electron affinity is O < S < Se. In a group electron affinity decreases with increase in atomic number.
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