main group element
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Main group element — The periodic table of the chemical elements. The columns represent the groups. Groups 1, 2 and 13 to 18 are the main group elements. In chemistry and atomic physics, main group elements are elements in groups (periodic columns) whose lightest… … Wikipedia
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
zinc group element — ▪ chemistry Introduction any of the three metals that comprise Group 12 (IIb) of the periodic table of elements namely, zinc (Zn), cadmium (Cd), and mercury (Hg). (See Figure >.) They have properties in common, but they also differ in… … Universalium
Group theory — is a mathematical discipline, the part of abstract algebra that studies the algebraic structures known as groups. The development of group theory sprang from three main sources: number theory, theory of algebraic equations, and geometry. The… … Wikipedia
Group (mathematics) — This article covers basic notions. For advanced topics, see Group theory. The possible manipulations of this Rubik s Cube form a group. In mathematics, a group is an algebraic structure consisting of a set together with an operation that combines … Wikipedia
Group (periodic table) — The periodic table of the chemical elements. The columns represent the groups In chemistry, a group (also known as a family) is a vertical column in the periodic table of the chemical elements. There are 18 groups in the standard periodic table,… … Wikipedia
Group 6 element — Group → 6 ↓ Period 4 24 Cr 5 … Wikipedia
Main Street (Roy Wood & Wizzard album) — Main Street Studio album by Roy Wood Wizzard Released 2000 Genre … Wikipedia
Main Street Historic District (Medina, New York) — Main Street Historic District U.S. National Register of Historic Places U.S. Historic district … Wikipedia
Group 42 — (Czech Skupina 42 ) was Czech artistic group established in 1942. Although its roots could be found already in 1938 – 1939, forming in 1940.Activity of the group was terminated in 1948, but its influence on Czech literature and Czech art was… … Wikipedia
