| 词汇 | valence-electron |
| 释义 | BETA valence electroncollocation 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 valence electronvalence electron Having used two electrons in bonding to the terminal hydrogen atoms, each boron has one valenceelectron remaining for additional bonding. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In semiconductors, the valenceelectron plasma frequency is usually in the deep ultraviolet, which is why they are reflective. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Chemically, muonic helium, possessing an unpaired valenceelectron, can bond with other atoms, and behaves more like a hydrogen atom than an inert helium atom. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a paramagnetic compound and also highly reducing, both consequences of its low valenceelectron count. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Hydrogen has only one "valenceelectron" and can form only one bond with an atom that has an incomplete outer shell. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In a transition metal, a valenceelectron can also be in an inner shell. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Strictly speaking, both lanthanum and lutetium have been labeled as group 3 elements, because they both have a single valenceelectron in the d shell. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, sodium has one "valenceelectron" in its outermost shell, so in ionized form it is commonly found with one lost electron, as. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For metals and semiconductors one has different rules involving valenceelectron concentration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Chlorine has seven "valence electrons" and can form only one bond with an atom that donates a "valenceelectron" to complete chlorine's outer shell. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Although hydrogen has only one valenceelectron, it can form bonds with more than one atom in hypervalent bonds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Since these elements contain one more or one less valenceelectron than carbon, they turn synthetic diamond into p-type or n-type semiconductor. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Instead, a valenceelectron for a transition metal is defined as an electron that resides outside a noble-gas core. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Hydrogen, like the alkali metals, has one valenceelectron and reacts easily with the halogens but the similarities end there. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The electrons involved in the faradaic processes are transferred to or from valenceelectron states (orbitals) of the redox electrode reagent. 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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