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UML Chemistry Chapter4
UNIVERSITY OF MESH LEARNING · CHEM 101 · GENERAL CHEMISTRY I
Chapter 4: Chemical Bonding and Molecular Structure
Why atoms combine, how they share electrons, and what that means for the shape of matter
LEARNING OBJECTIVES
- Distinguish ionic, covalent, and metallic bonding using electronegativity.
- Draw Lewis structures for simple molecules and polyatomic ions.
- Predict molecular geometry with the VSEPR model.
- Relate bond polarity and geometry to overall molecular polarity.
4.1 Why Do Atoms Bond?
Isolated atoms are rare in nature. With the exception of the noble gases, nearly every element you encounter is bound to something else.
4.2 Three Families of Bonds
Ionic bonds arise when ΔEN is large (conventionally > 1.7). One atom effectively transfers electrons to the other, producing ions held together by electrostatic attraction.
Covalent bonds form when ΔEN is small. Atoms share one or more electron pairs, producing discrete molecules.
4.1 Why Do Atoms Bond?
Isolated atoms are rare in nature. With the exception of the noble gases, nearly every element you encounter is bound to something else.
4.2 Three Families of Bonds
Ionic bonds arise when ΔEN is large (conventionally > 1.7). One atom effectively transfers electrons to the other, producing ions held together by electrostatic attraction.
Covalent bonds form when ΔEN is small. Atoms share one or more electron pairs, producing discrete molecules.
Tip: Rename an item the moment you add it. Chapter 4 - bonding finds itself again months later; document (3).pdf never will.