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closed shell
noun
, Physics.
- (in atomic structure) a shell that contains the maximum number of electrons permitted by the exclusion principle.
- (in nuclear structure) a shell that contains the maximum number of nucleons permitted by the exclusion principle.
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Example Sentences
Most of them will have tightly closed shells, but some may be “gaping,” meaning they are reacting to their environment or have died.
From Washington Post
A tightly closed shell indicates that they are alive, whereas a slightly open shell proves that they are dead.
From Project Gutenberg
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