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Chemistry 2e · Chemical Bonding and Molecular Geometry

Introduction

CC BY 4.0 · OpenStax · approximately 1 min read

Learning objectives

  • Ionic Bonding
  • Covalent Bonding
  • Lewis Symbols and Structures
  • Formal Charges and Resonance
  • Strengths of Ionic and Covalent Bonds
  • Molecular Structure and Polarity

View original figure (external; image not reproduced in this text edition)

Original figure description: Three figures are shown. The left figure is a many-sides spherical ball composed of hexagonal rings which have carbon atoms at each corner. The center picture shows a soccer ball. The right picture shown as water tower with sides shaped like hexagonal rings.

Nicknamed “buckyballs,” buckminsterfullerene molecules (C60) contain only carbon atoms (left) arranged to form a geometric framework of hexagons and pentagons, similar to the pattern on a soccer ball (center). This molecular structure is named after architect R. Buckminster Fuller, whose innovative designs combined simple geometric shapes to create large, strong structures such as this weather radar dome near Tucson, Arizona (right). (credit middle: modification of work by “Petey21”/Wikimedia Commons; credit right: modification of work by Bill Morrow)

It has long been known that pure carbon occurs in different forms (allotropes) including graphite and diamonds. But it was not until 1985 that a new form of carbon was recognized: buckminsterfullerene. This molecule was named after the architect and inventor R. Buckminster Fuller (1895–1983), whose signature architectural design was the geodesic dome, characterized by a lattice shell structure supporting a spherical surface. Experimental evidence revealed the formula, C60, and then scientists determined how 60 carbon atoms could form one symmetric, stable molecule. They were guided by bonding theory—the topic of this chapter—which explains how individual atoms connect to form more complex structures.

← Periodic Variations in Element PropertiesIonic Bonding →

Attribution. Chemistry 2e, OpenStax, Rice University, and the contributing authors credited in the book. Licensed under Creative Commons Attribution 4.0 International. Source revision 32c719622f of openstax/osbooks-chemistry-bundle (2026-02-04). CC BY 4.0. Original source ↗. Text edition of a pinned CC BY 4.0 source revision of the OpenStax book, converted from CNXML by the EvidenceHelix importer. Original prose, learning objectives, tables, exercises, glossary and captions are preserved; images are not copied (figures link to the original source and keep their credits). No new content was added. Later revisions of this book can carry different licence terms and are not used.

In this chapter Contents

  • Introduction
  • Ionic Bonding
  • Covalent Bonding
  • Lewis Symbols and Structures
  • Formal Charges and Resonance
  • Strengths of Ionic and Covalent Bonds
  • Molecular Structure and Polarity

Source

OpenStax source file ↗

Illustrated original ↗

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