- electropositive elements
- • електроположителен елемент
English-Bulgarian polytechnical dictionary . 2013.
electropositive elements
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électropositive — ● électropositif, électropositive adjectif Se dit des éléments chimiques dont les atomes peuvent facilement céder des électrons … Encyclopédie Universelle
electropositive — for an atom, having a tendency to release valence electrons; also a term to describe metallic elements … Mechanics glossary
caesium — Symbol: Cs Atomic number: 55 Atomic weight: 132.90545 Soft silvery white metallic element belonging to group 1 of the periodic table. One of the three metals which are liquid at room temperature. Cs 133 is the natural, and only stable, isotope.… … Elements of periodic system
iodine — Symbol: I Atomic number: 53 Atomic weight: 126.904 Dark violet nonmetallic element, belongs to group 17 of the periodic table. Insoluble in water. Required as a trace element for living organisms. One stable isotope, I 127 exists, in addition to… … Elements of periodic system
manganese — Symbol: Mn Atomic number: 25 Atomic weight: 54.938 Grey brittle metallic transition element. Rather electropositive, combines with some non metals when heated. Discovered in 1774 by Scheele … Elements of periodic system
organometallic compound — ▪ chemical compound Introduction any member of a class of substances containing at least one metal to carbon bond in which the carbon is part of an organic group. Organometallic compounds constitute a very large group of substances that have… … Universalium
ceramic composition and properties — Introduction atomic and molecular nature of ceramic (industrial ceramics) materials (materials processing) and their resulting characteristics and performance in industrial applications. Industrial ceramics are commonly understood to… … Universalium
surface analysis — ▪ chemistry Introduction in analytical chemistry (chemistry), the study of that part of a solid that is in contact with a gas or a vacuum. When two phases of matter are in contact, they form an interface. The term surface is usually… … Universalium
Aluminium — Infobox aluminiumAluminium (Audio IPA|En uk aluminium1.ogg|ˌæljʊˈmɪniəm, IPA|/ˌæljəˈmɪniəm/) or aluminum (Audio IPA|En uk aluminum.ogg|/əˈluːmɪnəm/, see spelling below) is a silvery white and ductile member of the boron group of chemical elements … Wikipedia
Oxidation state — Not to be confused with Oxidation number. In chemistry, the oxidation state is an indicator of the degree of oxidation of an atom in a chemical compound. The formal oxidation state is the hypothetical charge that an atom would have if all bonds… … Wikipedia
Oxide — Oxides, such as iron(III) oxide or rust, which consists of hydrated iron(III) oxides Fe2O3·nH2O and iron(III) oxide hydroxide (FeO(OH), Fe(OH)3), form when oxygen combines with other elements An oxide ( … Wikipedia
