Question

1. which molecular shape is associated with a central atom that has three bonding pairs and one lone pair? a. trigonal pyramidal b. linear c. tetrahedral d. trigonal planar

Explanation:

In VSEPR (Valence - Shell Electron - Pair Repulsion) theory, when a central atom has three bonding pairs and one lone pair, the electron - pair geometry is tetrahedral. But due to the greater repulsion of the lone pair compared to bonding pairs, the molecular shape is trigonal pyramidal.

Answer:

A. Trigonal pyramidal