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在无机化学教学中,为了提高教学效果,需要使用许多图表。这里,我们向大家推荐几张活动幻灯片。 1.在讲解电子云要满足最大重叠条件才能有效地形成共价键时,我们采用了图1所示的幻灯片。其中,a是定片,b是动片。放映时按不同方向使两个电子云平移到相互靠拢并部分重叠,比较它们在不同方向上的重叠效果,然后用c片总结三种典型方向上的重叠效果,说明共价键有方向性。这套幻灯片最好着色(a为红色,b为蓝色,重叠部分紫色),效果较好。
In inorganic chemistry teaching, many charts are needed to improve teaching effectiveness. Here, we recommend several slides for the event. 1. We will use the slide shown in Figure 1 to explain how electron clouds must satisfy the maximum overlap condition to effectively form covalent bonds. Among them, a is a fixed piece, b is a moving piece. During the screening, the two electron clouds are translated in a different direction so that the two electron clouds move closer to each other and partially overlap, and their overlapping effects in different directions are compared. Then c-patch is used to summarize the overlapping effects in three typical directions, indicating that the covalent bonds have directionality. This set of slides is best colored (a red, b blue, purple overlap), the effect is better.