- Group (periodic table)
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Wikipedia English-Arabic glossary . 2014.
Group (periodic table)
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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
Periodic table — This article is about the periodic table of the elements . For other uses, see The Periodic Table. The periodic table of the chemical elements (also known as the periodic table or periodic table of the elements) is a tabular display of the 118… … Wikipedia
periodic table — /pear ee od ik, pear /, Chem. a table illustrating the periodic system, in which the chemical elements, formerly arranged in the order of their atomic weights and now according to their atomic numbers, are shown in related groups. [1890 95] * * * … Universalium
Periodic table (by blocks) — Helium is placed next to hydrogen instead of on top of neon because it is part of the s2 group. In addition to the blocks listed in this table, there is a hypothetical g block which is not pictured here. g block elements can be seen in the… … Wikipedia
Extended periodic table — There are currently seven periods in the periodic table of chemical elements, culminating with atomic number 118. If further elements with higher atomic numbers than this are discovered, they will be placed in additional periods, laid out (as… … Wikipedia
Period (periodic table) — In the periodic table of the elements, a period is a horizontal row of the table.The elements are laid out in a series of rows so that those with similar properties line up in vertical columns: this reflects the periodic recurrence of similar… … Wikipedia
Periodic table (crystal structure) — The structures of metallic elements adopted at normal temperatures are colour coded and shown below Greenwood Earnshaw] , the only exception is mercury, Hg, which is a liquid and the structure refers to the low temperature form. The melting… … Wikipedia
History of the periodic table — The history of the periodic table reflects over a century of growth in the understanding of chemical properties, and culminates with the publication of the first actual periodic table by Dmitri Mendeleev in 1869.[1] While Mendeleev built upon… … Wikipedia
The Periodic Table (book) — Infobox Book name = The Periodic Table title orig = Il sistema periodico translator = Raymond Rosenthal image caption = Paperback cover published by Abacus. author = Primo Levi illustrator = country = United Kingdom publisher = Abacus release… … Wikipedia
Group 6 element — Group → 6 ↓ Period 4 24 Cr 5 … Wikipedia
Group 7 element — Group → 7 ↓ Period 4 25 Mn 5 … Wikipedia
