The meaning of VALENCE ELECTRON is a single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of the atom.
Define valence shell. valence shell synonyms, valence shell pronunciation, valence shell translation, English dictionary definition of valence shell. n. The outermost shell of an atom consisting of the valence electrons. American Heritage® Dictionary
valence electrons词源英文解释 The first known use of valence electron was in 1922 valence electrons 例句 1.The scientists at Tokyo Tech want to do something similar with valence electrons, which reside on the outer shell of an atom and are responsible for each atom's chemical properties. ...
The concept of valence has evolved to include not just the combining capacity but also ideas like valence electrons (the electrons in the outermost shell that are involved in bonding) and valence orbitals (the orbitals that contain the valence electrons). Valency, by contrast, remains a fixed nu...
n.an electron in the outer shell of an atom which can combine with other atoms to form molecules 学习怎么用 双语例句 The outer ring contains the valence electrons. 排在外层的有价电子。 It was generally believed that in a metal the valence electrons are easily detached from the individual ato...
Valence Electrons of Elements Here are some examples of elements and their valence electrons: Hydrogen (H): 1 valence electron Helium (He): 2 valence electrons (full shell, inert) Lithium (Li): 1 valence electron Carbon (C): 4 valence electrons ...
To explain the title "Valence Shell Electron Pair Repulsion," let's do a some review. The valence shell is the outer shell of electrons that are involved in bonding. Valence comes from the same word as "Valiant" meaning courageous and strong. In chemistry, it is these outer electrons that...
我猜测最有可能的原因可能是d层和f层和s,p层能级相差太多、e.g. 3d和4s的能级就相差不多、而根据传统定义、只有最外层的才能算valence electrons、所以3d就被排除掉了（虽然这种定义对于解释transition metal的化学性质基本没帮助）、而你的选项valence electrons are all outermost electrons in "a ...
closed-shell valence-core electronSCMEH-MO methodIn this study, the correlation between open-shell valence and closed-shell valence-core electrons is shown to be significant, with regard to an adequate description of the bonding in transition metal diatomic molecules. The SCMEH-MO (self-consistent...
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