Q87 E - Chemistry (OpenStax)

Question

Explain the difference between electron-pair geometry and molecular structure.

Step-by-Step Solution

Answer

The main difference between electron-pair geometry and molecular structure is that the latter considers the bonding-pair geometry whereas the former considers placement of electrons.

Step 1: Concept Introduction

A molecule is a group of atoms (two or more) held together by chemical bonds; the term may or may not include ions that meet this condition depending on the context.

Step 2: Difference between electron-pair and molecular structure

Space needs to be provided for each pair of electrons whether they are in a bond or are present as lone pairs. This is required mainly to avoid any repulsion between electrons. 

Electron pair geometry considers the placement of all electrons whereas Molecular structure considers only the bonding-pair geometry.

 

Therefore, the difference between electron-pair geometry and molecular structure is bonding.