| 词汇 | electron-shells |
| 释义 | BETA electron shellscollocation in Englishmeanings of electronThese words are often used together. Click on the links below to explore the meanings. electron noun[ C ] uk /iˈlek.trɒn/ us /iˈlek.trɑːn/ an extremely small piece of matter with a negative ... See more at electron Examples of electron shellselectron shells Groups of electrons were thought to occupy a set of electronshells around the nucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. At rest, an atom within the sample contains ground state (or unexcited) electrons in discrete energy levels or electronshells bound to the nucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Generally, the product nucleus has a different atomic number, and thus the configuration of its electronshells is wrong. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The active magnetic dipoles in this case are those of the electronshells of the paramagnetic atoms. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The sets of orbitals with the same "n" value are often referred to as electronshells or energy levels. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. All nuclei lose their electronshells and become positively-charged ions, in turn emitting photons of a slightly lower energy than they had absorbed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Groups of electrons were thought to occupy a set of electronshells about the nucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Therefore, the only factor which affects the atomic radius of the alkali metals is the number of electronshells. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The noble gas nonmetals have completely filled outer electronshells, and most nonmetals have almost filled outer shells. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The heavier noble gases have more electronshells than the lighter ones. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, after approximately element 120, the proximity of the electronshells makes placement in a simple table problematic. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Modern quantum mechanics explains these periodic trends in properties in terms of electronshells. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Cadmium and its congeners are not always considered transition metals, in that they do not have partly filled d or f electronshells in the elemental or common oxidation states. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Elements of the same period have the same number of electronshells; with each group across a period, the elements have one more proton and electron and become less metallic. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The reason for this is that their outmost electronshells (valence shells) are completely filled, so that they have little tendency to acquire or lose electrons. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. 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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