Chapter 7, Problem 7.108QP

Interpretation Introduction

Interpretation: The Lewis structures of the given molecules should be drawn. Also to identify whether ${\text{SO}}_{\text{3}}$, ${\text{PF}}_{\text{3}}$, ${\text{F}}_{\text{3}}\text{SiH}$ and ${\text{Br}}_{\text{2}}{\text{CH}}_{\text{2}}$ polar and the geometry of ${\text{SiH}}_{\text{3}}{}^{-}$.

Concept Introduction:

• Molecular geometry is the spatial arrangement of atoms in a molecule. It is the three dimensional arrangement of bonded atoms. Many chemical, physical and even biological properties depend on molecular geometry.
• Using VSEPR theory and Lewis structure, the exact geometry of a molecule can be obtained.
• In VSEPR, the geometry of the molecule is explained based on minimizing electrostatic repulsion between the molecules’ valence electrons around a central atom
• Lewis structures is also known as Lewis dot structures which represents the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.
• While formation of a bond, there is a chance that electronegativity between the atoms are high. It tends to make the bond partially ionic and are called polar molecule. When the electronegativity between two atoms is similar, sharing of electron in the bond is equal and is called nonpolar molecules.