Molecular Geometry

Concept: Bond length is inversely proportional to bond order. Higher bond order shorter bond length.

Step 1: Understand effect of charge on bond order:

• CF : fewer electrons higher bond order
• CF: intermediate bond order
• CF : more electrons in antibonding orbitals lower bond order

Step 2: Relate bond order to bond length:


Step 3: Arrange in increasing bond length:
Conclusion:
Correct order = CF < CF < CF