11.1 第16至第18族元素概述 Instruction to groups 16,17 and 18 elements 11.2 工业资源、单质的制备和用途 本章内容 Industrial recourses,preparation and application of elementary substances 11.3 过氧化氢、其他无机过氧化物和臭氧 Oxydol,other peroxy-compounds and ozone 11.4 硫的重要化合物 Some important compounds of sulfur 11.5 卤素 Halogens 11.6 稀有气体与化学发展 Noble gases and chemical development 11.1 第16至第18族元素概述 Instruction to groups 16, 17 and 18 elements 11.2 工业资源、单质的制备和用途 Industrial recourses,preparation and application of elementary substances 11.3 过氧化氢、其他无机过氧化物和臭氧 Oxydol,other peroxy-compounds and ozone 11.4 硫的重要化合物 Some important compounds of sulfur 11.5 卤素 Halogens 11.6 稀有气体与化学发展 Noble gases and chemical development