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单词 electron shells
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Examples ofelectron shells

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Groups of electrons were thought to occupy a set ofelectronshellsaround the nucleus.
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At rest, an atom within the sample contains ground state (or unexcited) electrons in discrete energy levels orelectronshellsbound to the nucleus.
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Generally, the product nucleus has a different atomic number, and thus the configuration of itselectronshellsis wrong.
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The active magnetic dipoles in this case are those of theelectronshellsof the paramagnetic atoms.
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The sets of orbitals with the same "n" value are often referred to aselectronshellsor energy levels.
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All nuclei lose theirelectronshellsand become positively-charged ions, in turn emitting photons of a slightly lower energy than they had absorbed.
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Groups of electrons were thought to occupy a set ofelectronshellsabout the nucleus.
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Therefore, the only factor which affects the atomic radius of the alkali metals is the number ofelectronshells.
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The noble gas nonmetals have completely filled outerelectronshells, and most nonmetals have almost filled outer shells.
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The heavier noble gases have moreelectronshellsthan the lighter ones.
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However, after approximately element 120, the proximity of theelectronshellsmakes placement in a simple table problematic.
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Modern quantum mechanics explains these periodic trends in properties in terms ofelectronshells.
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Cadmium and its congeners are not always considered transition metals, in that they do not have partly filled d or felectronshellsin the elemental or common oxidation states.
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Elements of the same period have the same number ofelectronshells; with each group across a period, the elements have one more proton and electron and become less metallic.
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The reason for this is that their outmostelectronshells(valence shells) are completely filled, so that they have little tendency to acquire or lose electrons.
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The definition was later revised to include compounds with similarly reactiveelectronshells.
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The number of electrons in each element'selectronshells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior.
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For example, the structure ofelectronshellsand subshells in chemistry is significantly affected by the quantization of angular momentum.
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In general the process of forming a negative ion is driven by the filling of atomicelectronshellsto form a lower energy configuration.
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There is no such equivalence, however, for ionized or excited states with openelectronshells.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.

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更新时间:2024/12/28 10:56:10