Molecular Geometry — Mains Questions

Discuss the significance of molecular geometry in determining the physical and chemical properties of compounds, providing examples from drug design or material science.

Explain how the presence of lone pairs on the central atom affects both the electron geometry and molecular geometry, using suitable examples. How does this impact the overall polarity of the molecule?

Critically analyze the limitations of VSEPR theory in predicting molecular shapes and suggest how more advanced theories or computational methods address these shortcomings. Relate this to the broader scientific approach of model refinement.