The bond angle for the C-P-C bonds in (C₆H₅)₃P would be expected to be approximately: A)60 $\circ$ B)90 $\circ$ C)109 $\circ$ D)120 $\circ$ E)180 $\circ$

Question

Quizplus · Accepted Answer

The C-P-C atoms in (C₆H₅)₃P are arranged in a tetrahedral geometry with one lone pair on the phosphorus atom. In tetrahedral geometry, the bond angle between the four atoms is expected to be approximately 109.5°. However, the lone pair on phosphorus exerts a greater repulsion than bonded pairs, causing the C-P-C bond angle to be slightly less than 109.5°. Therefore, the closest answer choice is 109°. Choice C is the closest answer to this value.

The Bond Angle for the C-P-C Bonds in (C6H5)3P Would ∘\circ∘

The Bond Angle for the C-P-C Bonds in (C₆H₅)₃P Would $\circ$