The idea was suggested by the chemical theory of valency in which one is used to the idea of electrons in an atom forming closed shells which do not contribute at all to the valency.
这个想法是由化学中的化学键理论想到的。在这个理论里，人们通常认为原子中形成满壳层的电子对化学键完全没有贡献。
The idea was suggested by the chemical theory of valency in which one is used to the idea of electrons in an atom forming closed shells which do not contribute at all to the valency.
这个想法是由化学中的化学键理论想到的。在这个理论里，人们通常认为原子中形成满壳层的电子对化学键完全没有贡献。
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