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