Question

Highest X-O bond order is, (X is central atom)

• A. \( \text{F}_2\text{O} \)
• B. \( \text{CO} \)
• C. \( \text{H}_2\text{O} \)
• D. \( \text{CO}_2 \)

Answer 1

The Correct Option is B

Step 1: Bond order concept.
Bond order is defined as the number of chemical bonds between a pair of atoms. The bond order can be determined by applying molecular orbital theory, which considers the number of bonding and antibonding electrons in the molecule. Step 2: Comparing the bond orders of each molecule.
- \(\text{F}_2\text{O}\) has a bond order of 1 because the bond between oxygen and fluorine is a single bond. - \(\text{CO}\) has a bond order of 3, which results from a triple bond between carbon and oxygen.
- \(\text{H}_2\text{O}\) has a bond order of 1, as it involves single bonds between oxygen and hydrogen atoms.
- \(\text{CO}_2\) has a bond order of 2, resulting from the two double bonds between carbon and oxygen atoms.
Step 3: Conclusion.
Since \( \text{CO} \) has the highest bond order of 3, the correct answer is (B).
Final Answer: (B) \( \text{CO} \)