- incomplete electron shell
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незаполненная (электронная) оболочка
Англо-русский словарь терминов металлургии и сварки. 2011.
incomplete electron shell
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Valence electron — In chemistry, valence electrons are the electrons contained in the outermost, or valence , electron shell of an atom. Valence electrons are important in determining how an element reacts chemically with other elements: The fewer valence electrons … Wikipedia
Unpaired electron — In chemistry an unpaired electron is a electron that occupies an orbital singly, rather than as part of an electron pair.As the formation of electron pairs is often energetically favorable, either in the form of a chemical bond or as a lone pair … Wikipedia
valence electron — noun an electron in the outer shell of an atom which can combine with other atoms to form molecules • Hypernyms: ↑electron, ↑negatron * * * noun : a single electron or one of two or more electrons contained in the outer incomplete shell of an… … Useful english dictionary
chemical bonding — ▪ chemistry Introduction any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another … Universalium
Transition metal — The term transition metal (sometimes also called a transition element) has two possible meanings: The IUPAC definition[1] states that a transition metal is an element whose atom has an incomplete d sub shell, or which can give rise to cations… … Wikipedia
Octet rule — The bonding in carbon dioxide (CO2): all atoms are surrounded by 8 electrons, fulfilling the octet rule. The octet rule is a chemical rule of thumb that states that atoms of low (<20) atomic number tend to combine in such a way that they each… … Wikipedia
Ion — Cation and Anion redirect here. For the particle physics/quantum computing concept, see Anyon. For other uses, see Ion (disambiguation). Hydrogen atom (center) contains a single proton and a single electron. Removal of the electron gives a cation … Wikipedia
chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… … Universalium
Valence (chemistry) — For other uses, see Valence (disambiguation). In chemistry, valence, also known as valency or valence number, is a measure of the number of bonds formed by an atom of a given element. Valence can be defined as the number of valence bonds[1] a… … Wikipedia
Nuclear structure — Physics portal This page is an adapted translation of the corresponding fr:Structure nucléaire As will be noted, there remain void paragraphs, as on the original (which provides no sources). Competent Wikipedians are welcom … Wikipedia
Orbital hybridisation — Four sp3 orbitals. Three sp2 orbitals. In … Wikipedia
