The Foundations of Chemistry

OUTLINE

6-1 More About the Periodic Table

Periodic Properties of the Elements

6-2 Atomic Radii

6-3 Ionization Energy

6-4 Electron Affinity

6-5 Ionic Radii

6-6 Electronegativity

Chemical Reactions and Periodicity

6-7 Hydrogen and the Hydrides

Hydrogen

Reactions of Hydrogen and the

Hydrides

6-8 Oxygen and the Oxides

Oxygen and Ozone

Reactions of Oxygen and the

Oxides

Combustion Reactions

Combustion of Fossil Fuels and

Air Pollution

OBJECTIVES

After you have studied this chapter, you should be able to

• More effectively use the periodic table


• Discuss chemical periodicity of the following physical properties:
  Atomic radii
  Ionization energy
  Electron affinity
  Ionic radii
  Electronegativity


• Describe chemical periodicity in the reactions of
  Hydrogen
  Oxygen


• Describe chemical periodicity in the compounds of
  Hydrogen
  Oxygen

MORE ABOUT THE PERIODIC TABLE

In Chapter 4 we described the development of the periodic table, some terminology for
it, and its guiding principle, the periodic law.

The properties of the elements are periodic functions of their atomic numbers.

In Chapter 5 we described electron configurations of the elements. In the long form
of the periodic table, elements are arranged in blocks based on the kinds of atomic orbitals
being filled. (Please review Table 5-5 and Figure 5-31 carefully.) We saw that electron

6-1

The bright colors in fireworks

displays are produced when various

metals react with oxygen.