Q96E - Chemistry (OpenStax)

Question

Predict the electron pair geometry and the molecular structure of each of the following:

1. \({\rm{IO}}{{\rm{F}}_{\rm{5}}}\)(I is the central atom)
2. \({\rm{POC}}{{\rm{l}}_{\rm{3}}}\)(P is the central atom)
3. \({\rm{C}}{{\rm{l}}_{\rm{2}}}{\rm{SeO}}\)(Se is the central atom)
4. \({\rm{ClS}}{{\rm{O}}^{\rm{ + }}}\)(S is the central atom)
5. \({{\rm{F}}_{\rm{2}}}{\rm{SO}}\)(S is the central atom)
6. \({\rm{N}}{{\rm{O}}_{\rm{2}}}^{\rm{ - }}\)
7. \({\rm{SiO}}_{\rm{4}}^{{\rm{4 - }}}\)

Step-by-Step Solution

Answer

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

Step 1: Concept Introduction

The three-dimensional arrangement of atoms in a molecule is dictated by the VSEPR theory. Minimum repulsion is preferred by this theory.

Step 2: Find the electron pair geometry and the molecular structure

Therefore, the arrangement of all electrons is taken into account in electron-pair geometry. Only the bonding-pair geometry is taken into account in molecular structure.