2.1碳氢化合物的分类与命名 2.1.2 Representing molecules Molecular formula CHa H aa stick figure H-CH a lewis dot structure H a a sawhorse representation a hatched line -behind the plane H:CH HIll1 C a solid wedge-in front of the plane H2.1 碳氢化合物的分类与命名 ◼ 2.1.2 Representing Molecules ◼ Molecular formula CH4 H ◼ a Stick figure H C H ◼ a Lewis dot structure H ◼ a Sawhorse representation