electron shell
simple past tense of take the point
(biology) One of the secondary, and usually sexual, zooids produced by budding or fission from the primary zooids, in animals having alternate generations.
Any of a group of serine proteinase inhibitors found in arthropods
(physics) The collective states of all electrons in an atom having the same principal quantum number (visualized as an orbit in which the electrons move).
原子の電子殻は量子規則によって決まる限られた数の電子を収容することができる。
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