Electronegativity
Which order of electronegativity is correct for period-2 elements B, C, N and O?
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About This Question
- Subject
- chemistry
- Chapter
- classification of elements and periodicity in properties
- Topic
- electronegativity
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
B < C < N < O
Across a period, effective nuclear charge rises and atomic size decreases, leading to stronger attraction for shared electrons. Therefore electronegativity generally increases from left to right. For the given period-2 elements, the correct increasing order is B < C < N < O.
This easy difficulty chemistry question is from the chapter classification of elements and periodicity in properties, covering the topic of electronegativity. It appeared in the 2025 exam.
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