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Like the periodic table, the list below organizes the elements by the number of protons in their atoms; it can also be organized by other properties, such as atomic weight, density, and electronegativity. For more detailed information about the origins of element names, see List of chemical element name etymologies.
The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ("periods") and columns ("groups"). It is an icon of chemistry and is widely used in physics and other sciences.
The periodic table of the chemical elements.The columns represent the groups.Groups 1, 2 and 13 to 18 constitute the main group. Sometimes groups 3 and 12, as well as the lanthanides and actinides (the two rows at the bottom), are also included in the main group.
Molybdenum at The Periodic Table of Videos (University of Nottingham) Mineral & Exploration – Map of World Molybdenum Producers 2009 "Mining A Mountain" Popular Mechanics, July 1935 pp. 63–64; Site for global molybdenum info; CDC – NIOSH Pocket Guide to Chemical Hazards
An extended periodic table theorizes about chemical elements beyond those currently known and proven. The element with the highest atomic number known is oganesson (Z = 118), which completes the seventh period (row) in the periodic table. All elements in the eighth period and beyond thus remain purely hypothetical.
Each of these orbitals can accommodate up to two electrons (with opposite spins), forming the basis of the periodic table. Other magnetic quantum numbers are similarly defined, such as m j for the z-axis component the total electronic angular momentum j, [1] and m I for the nuclear spin I. [2]
Use of the periodic table is now ubiquitous in chemistry, providing an extremely useful framework to classify, systematize and compare all the many different forms of chemical behavior. The table has also found wide application in physics , geology , biology , materials science , engineering , agriculture , medicine , nutrition , environmental ...
Magnesium at The Periodic Table of Videos (University of Nottingham) Chemistry in its element podcast (MP3) from the Royal Society of Chemistry's Chemistry World: Magnesium "Magnesium -- a versatile and often overlooked element: New perspectives with a focus on chronic kidney disease". Clinical Kidney Journal. 5 (Suppl 1): NP. February 2012.