Molecular Geometries of Molecules with Expanded Valence Shells
Use the VSEPR model to predict the molecular geometry of (a) SF4, (b) IF5.
A certain AB4 molecule has a square-planar molecular geometry. Which of the following statements about the molecule is or are true?:
(i) The molecule has four electron domains about the central atom A., (i) The B — A— B angles between neighboring B atoms is SO'., (i) The molecule has two nonbonding pairs of electrons on atom A.
Chapter 12 Lecture Notes Things to remember o Remember that properties of gases can be related by PV=nRT (ideal gas law) o Remember that molecules of gases are far apart, while molecules in liquid and solid are closely packed o Remember that molecules can have polar bonds, due to differences in electronegativity of bonded atoms o Intramolecular bonds are strong Covalent: 100-400 kJ/mol Ionic: 700 -1100 kJ/mol o Intramolecular forces: forces holding atoms together to form molecules (covalent bonds, ionic bonds) o Intermolecular forces: electrostatic interactions between molecules that are weaker than forces between oppos
