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NEET generalGeneralMedium

Question

Consider the following species: CN+,CN−,NO\text{CN}^+, \text{CN}^-, \text{NO} and CN\text{CN}. Which one of these will have the highest bond order?

1

CN+^+

2

CN−^-

3

NO

4

CN

Step-by-Step Solution

Bond order is calculated using molecular orbital theory. CN−\text{CN}^- has 14 electrons (bond order 3), CN\text{CN} has 13 electrons (bond order 2.5), CN+\text{CN}^+ has 12 electrons (bond order 2), and NO\text{NO} has 15 electrons (bond order 2.5). Thus, CN−\text{CN}^- has the highest bond order.

Exam Context & Concepts Covered

This question aligns with the NEET general syllabus, specifically targeting concepts from General. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

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