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Question
Arrange the elements of second period in increasing order of their electron affinity. Name the elements which do not follow the trend in this period.
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Solution
Lithium < Boron < Carbon < Oxygen < Fluorine
Neon, Nitrogen and Beryllium do not show negative values and hence do not follow the trend in this period.
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| A | Z - 1 | ||
| B | Z | ||
| C | Z + 1 |
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