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1940年美国的Sidgwick NV等人相继提出了价层电子对互斥理论(valence shell electron pair repulsion theory),简称VSEPR法,该法适用于主族元素间形成的ABm型分子或离子。根据此理
In 1940, Sidgwick NV et al. Proposed the valence shell electron pair repulsion theory (VSEPR) one after another, which applied to ABm type molecules or ions formed between the main group elements. According to this theory