Question

An s-orbital may combine with p-orbital provided that lobes of p-orbital are

• A. perpendicular to the axis joining the nuclei
• B. pointing along the axis joining the nuclei
• C. making an acute angle with the axis joining the nuclei
• D. making an obtuse angle with the axis joining the nuclei

Hint:

Maximum overlap = stronger bond. For s–p overlap, the p orbital lobe must point along the bond axis.

Answer 1

The Correct Option is B

Step 1: Orbital Overlap Requirement.
Effective orbital overlap requires alignment along the internuclear axis (line connecting nuclei).
Step 2: s and p Orbital Overlap.
- An s-orbital can effectively overlap with a p-orbital lobe only when the lobe is oriented along the internuclear axis.
- Non-axial orientations (perpendicular, acute, or obtuse) result in minimal or no overlap.
Final Answer: \[ \boxed{\text{pointing along the axis joining the nuclei}} \]