Metallic Character
Mediumchemistry
Which order shows increasing metallic character: B, C, N, O?
Select the correct option:
Solution
Incorrect! Answer:
O < N < C < B
- Metallic Definition: Tendency to lose electrons (electropositivity).
- Periodic Trend: Metallic character decreases from left to right across a period as ionization energy and electronegativity increase.
- Positions in Period 2:
- B (Group 13) - semi-metal/metalloid.
- C (Group 14) - non-metal.
- N (Group 15) - non-metal.
- O (Group 16) - non-metal.
- Relative scale: B is the most metallic in this set, and O is the least.
- Correct increasing order: O<N<C<B.
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About This Question
- Subject
- chemistry
- Chapter
- classification of elements and periodicity in properties
- Topic
- metallic character
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
O < N < C < B
- Metallic Definition: Tendency to lose electrons (electropositivity).
- Periodic Trend: Metallic character decreases from left to right across a period as ionization energy and electronegativity increase.
- Positions in Period 2:
- B (Group 13) - semi-metal/metalloid.
- C (Group 14) - non-metal.
- N (Group 15) - non-metal.
- O (Group 16) - non-metal.
- Relative scale: B is the most metallic in this set, and O is the least.
- Correct increasing order: O<N<C<B.
This medium difficulty chemistry question is from the chapter classification of elements and periodicity in properties, covering the topic of metallic character. It appeared in the 2025 exam.
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