4、地球物质的化学组成 Rock and Minerals inearth Chemical Symbols 8. Each chemical element is denoted by a one-or two-letter symbol Many of these symbols make sense in terms of the English name for the element--o for oxygen, He for helium, si for silicon, and so on Other symbols reflect the fact that, in earlier centuries, scientists were generally versed in Latin or Greek: The symbols Fe for iron and Pb for lead for example, and derived from ferrum and plumbum, respectively, the latin names for these elements 环质 Environmental Geology环境地质学 Environmental Geology 4、地球物质的化学组成 Rock and Minerals in earth Chemical Symbols 8. Each chemical element is denoted by a one-or two-letter symbol. Many of these symbols make sense in terms of the English name for the element--O for oxygen, He for helium, Si for silicon, and so on. Other symbols reflect the fact that, in earlier centuries, scientists were generally versed in Latin or Greek: The symbols Fe for iron and Pb for lead, for example, and derived from ferrum and plumbum, respectively, the Latin names for these elements