2005/01/21 | 过度元素[Transition Element]
类别(℃〖化学〗) | 评论(0) | 阅读(123) | 发表于 12:41
An element in which electrons are added to d sublevels (although a few anomalous transition elements actually add to a different sublevel as a result of energy considerations). All transition elements have two valence shell electrons. The Lewis structure shows two electrons in the outermost s sublevel.
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