element abundance

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• Abundance — may refer to: * Abundance (economics), the opposite of scarcity * Abundance (ecology), the relative representation of a species in a community * Abundance (programming language), a Forth like computer programming language * Abundance, a property… …   Wikipedia

• Abundance (disambiguation) — Abundance may refer to: * Abundance (economics), the opposite of scarcity * Abundance (ecology), the relative representation of a species in a community * Abundance (programming language), a Forth like computer programming language * Abundance, a …   Wikipedia

• Element chimique — Élément chimique Pour les articles homonymes, voir Élément. On définit par élément chimique, ou simplement élément, une catégorie d atomes ayant en commun le même nombre de protons dans leur noyau atomique, ce nombre, noté Z, définissant le… …   Wikipédia en Français

• Abundance of the chemical elements — Estimated proportions of matter, dark matter and dark energy in the universe. Only the fraction of the mass and energy in the universe labeled atoms is composed of chemical elements. The abundance of a chemical element measures how relatively… …   Wikipedia

• Élément chimique — Pour les articles homonymes, voir Élément. On définit par élément chimique, ou simplement élément, une catégorie d atomes ayant en commun le même nombre de protons dans leur noyau atomique, ce nombre, noté Z, définissant le numéro atomique de l… …   Wikipédia en Français

• abundance — /euh bun deuhns/, n. 1. an extremely plentiful or oversufficient quantity or supply: an abundance of grain. 2. overflowing fullness: abundance of the heart. 3. affluence; wealth: the enjoyment of abundance. 4. Physics, Chem. the number of atoms… …   Universalium

• Abundance of the naturally occurring rare-earth elements — ▪ Table Abundance of the naturally occurring rare earth elements (parts per million) element Earth s crust average of 20 chondritic meteorites composite of 40 North American shales western North American Precambrian granites Kilauea basalt rank*… …   Universalium

• Chemical element — The periodic table of the chemical elements A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus.[1] Familiar examples of …   Wikipedia

• chemical element — Introduction also called  element,         any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.       This article considers the… …   Universalium

• nitrogen group element — ▪ chemical elements Introduction  any of the chemical elements that constitute Group Va of the periodic table (see Figure >). The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). The elements share… …   Universalium

• rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …   Universalium