Rare earth element — Rare earth ore, shown with a United States penny for size comparison These rare … Wikipedia
élément alcalino-terreux — šarminis žemės elementas statusas T sritis fizika atitikmenys: angl. alkali earth element vok. Erdalkalielement, n rus. щелочноземельный элемент, m pranc. élément alcalino terreux, m … Fizikos terminų žodynas
Alkali metal — Group → 1 ↓ Period 2 3 Li 3 … Wikipedia
alkali metal — Chem. any of the group of univalent metals including potassium, sodium, lithium, rubidium, cesium, and francium, whose hydroxides are alkalis. [1880 85] * * * Any of the six chemical elements in the leftmost group of the periodic table (lithium,… … Universalium
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
Alkali — In chemistry, an alkali (from Arabic: Al Qaly القلي, القالي ) is a basic, ionic salt of an alkali metal or alkaline earth metal element. Alkalis are best known for being bases (compounds with pH greater than 7) that dissolve in water. The… … Wikipedia
element — Synonyms and related words: acid, acidity, addend, adjunct, agent, air, alkali, alkalinity, alloisomer, americium, anion, antacid, antecedents, antilogarithm, appurtenance, argument, article, aspect, astatine, atmosphere, atom, atomic particles,… … Moby Thesaurus
Mercury (element) — gold ← mercury → thallium Cd ↑ Hg ↓ Cn … Wikipedia
Period 2 element — A period 2 element is one of the chemical elements in the second row (or period) of the periodic table of the chemical elements. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behaviour of the… … Wikipedia
transuranium element — Any of the chemical elements after uranium in the periodic table (with atomic numbers greater than 92). All are radioactive (see radioactivity), with half lives ranging from tens of millions of years to fractions of a millisecond. Only two,… … Universalium