CHEMISTRY OF THE NONMETALS

Everything we see in the chapter-opening photo is composed of nonmetals. The water, of course, is H2O, and the sand is mostly Si02- Although we cannot see it, the air contains principally N2 and O2 with much lesser amounts of other nonmetallic substances. The palm tree is also composed mostly of nonmetallic elements. 

As you study this descriptive chemistry, it is important to look for trends rather than trying to memorize all the facts presented. The periodic table is your most valuable tool in this task. 

Recall that we can classify elements as metals, metalloids, and nonmetals. oQo (Section 7.6) Except for hydrogen, which is a special case, the nonmetals occupy the upper right portion of the periodic table. This division of elements relates nicely 

2 HYDROGEN The first nonmetal we consider, hydrogen, forms compounds with most other nonmetals and with many metals. 

3 GROUP 8A THE NOBLE GASES Next, we consider the noble gases, the elements of group 8A. which exhibit very limited chemical reactivity. 

Sign in to OWL atwww.cengage.com/owl to view tutoriais and simuiations, deveiop problem-solving skills, and complete online homework assigned by your professor. 

Download mini lecture videos for key concept review and exam prep from OWL or purchase them from www.cengagebrain.com 

E en grey-beards turn freshy, dance, caper, and laugh. 

The electrical charge that creates this bolt of lightning also changes some of the oxygen in the air to ozone. 

This icon introduces an opportunity for self-study and to explore interactive modules by signing in at academic.cengage.com/now. 

---

Emsley, J. (1971). Inorganic Chemistry of the Nonmetals. London Methuen. Kepert, D.L. (1972). The Early Transition Elements. New York Academic Press. 

Jolly, William L. The Chemistry of the Non-Metals. Englewood Cliffs, N.J. Prentice-Hall, 1966. This book is an introduction to the chemistry of the nonmetals, including the elements covered in this book. 

---