Unit 4: Chemical Bonding and Structure
Chemical bonding is crucial to understanding molecular and solid structure. The chapter covers ionic, covalent, and metallic bonds, their formation, properties, and the geometry of molecules. It further discusses the nature of intermolecular forces and how these determine various physical properties of substances.
Enroll to start learning
You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Ionic bonding involves electrostatic attraction between metal cations and nonmetal anions, leading to high melting points, hardness, and conductivity in molten/aqueous states.
- Covalent bonds form through sharing of electron pairs; bond order, bond length, and bond polarity are interrelated and affect molecular geometry.
- Intermolecular forces, though weaker than covalent and ionic bonds, dictate boiling points, melting points, and solubility.
Key Concepts
- -- Ionic Bonding
- Electrostatic attraction between oppositely charged ions resulting from electron transfer.
- -- Covalent Bonding
- The sharing of electron pairs between nonmetal atoms to achieve stable electron configurations.
- -- Intermolecular Forces
- Attractive forces between separate molecules or ions that influence physical properties like boiling and melting points.
- -- VSEPR Theory
- Valence-Shell Electron-Pair Repulsion theory predicts molecular shape based on electron domains around a central atom.
Additional Learning Materials
Supplementary resources to enhance your learning experience.